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“I see my work
as a psychologist
as a calling and a privilege.”  


   Founder, Live Well Psychology Center 

Live Well Psychology Center was founded by Dr. Alexandra Miller Clark, Psy.D..  The team includes Dr. Alexandra Miller, Brittany Wool, Dr. Heidi Keller and Hillary Grennan.



Dr. Alexandra Miller Clark, founder of Live Well Psychology Center, is a mother of four children and stepmother of four more.  She is an active reader in the ever growing body of work within psychology and shares new learning and research about psychology in a podcast entitled "Psychology America with Dr. Alexandra,” which can be found on iTunes, Spotify, Google Play, Stitcher and more.   Dr. Alexandra favors acceptance and commitment therapy (ACT), Forgiveness Therapy, family systems psychology (including EFT for couples) and clinical psychopharmacology as theoretical frameworks.  


In a confidential setting, with warmth and an awareness of the latest research on mental health, Dr. Alexandra creates a “safe space” to enable individuals, couples and families move toward the best version of themselves.  Dr. Alexandra recently presented at the American Psychological Association (APA) 2023 Annual Convention in Washington, DC on the topic of "Exercise Therapy for Anxiety."   In 2023 she also presented to Impact 100 New Jersey on the topic "The Heart and Science of Forgiveness."  Dr. Alexandra served as the keynote speaker for the 2020 New Jersey Psychological Association’s (NJPA) Fall Conference and has also presented for the Anxiety and Depression Association of America.  Dr. Alexandra has written a children’s book entitled “There’s Always Hope: A Story about Overcoming.”  She is actively involved in volunteering for her community, including serving as President of Lake Mohawk Tennis Club, as Chair of Continuing Education for the New Jersey Psychological Association, as an officer for the New Jersey Psychological Association Executive Board.  Dr. Alexandra was part of a small group of individuals that designed and created Altitude, Atlantic Health / Newton Medical Center’s ( youth empowerment program. 

To visit Dr. Alexandra's podcast website,

"Psychology America," please click the button below:

Click the links below to hear her latest podcasts:



Brittany Wool is a Licensed Professional Therapist.  Her theoretical orientation is based on the Cognitive Behavioral Therapy Model as well as Family Systems Model.  Brittany is also strongly interested and knowledgeable in the field of addiction and has been working with clients in this area of work for years.  Brittany has always felt that her calling was to help people feel good about who they are and being true to who they are.  She is here to help guide clients towards a place of peace and congruency as they navigate through, and try to manage life's stressors.  Her office creates a safe space to help clients feel comfortable enough to share their problems and gain insight through their own strengths and intuition.

For teenagers and adolescents, Brittany has been linked to middle schools and high schools in the area for years, working collaboratively with guidance counselors and parents to ensure that children and teenagers are safe within the community and getting the necessary support and guidance they need.


Brittany Wool, LPC

  • NJ Licensed Professional Therapist (#6344) 

  • BA in Psychology, Centenary College

  • MA in Clinical Mental Health, Fairleigh Dickinson University


Who We Are
Brittany Wool, LPC


Alexandra Miller Clark, Psy.D.

  • NJ Licensed Psychologist (#4348)

  • BA Public Policy Studies, Duke University

  • Doctorate in Psychology, Rutgers University, Graduate School of Applied and Professional Psychology (GSAPP)

  • Post-doc Master’s Degree (Ed.S.) in Marriage and Family Therapy, The College of New Jersey (TCNJ)

  • Post-doc Master of Science (MS) Clinical Psychopharmacology, Fairleigh Dickinson University (FDU)  

Heidi Keller



Dr. Heidi Keller has been a licensed psychologist in New Jersey for many years.  The overarching theme of her practice is brief solution-focused, strengths based therapy, which includes cognitive-behavioral and existential approaches.  She works primarily with adults (with the exception of ADHD evaluations for children and teens) as individuals and in groups.  Dr. Keller has worked for 15 years in a variety of settings, including the VA at Lyons, a therapeutic high school, therapeutic boarding school, outpatient mental health center, and in private practice. 

As a psychologist at Live Well Psychology Center, she will

be offering evening and weekend hours.


Being a psychologist has been Dr. Heidi Keller’s passion for many years.  She creates a safe, comfortable, and confidential environment for clients.  She may recommend

a book, a fun worksheet or music to help clients make faster progress between sessions. Dr. Keller lives with her husband and two dogs.  She also enjoys spending time with her two adult children, their spouses, and her two young grandchildren.  Horseback riding, reading historical fiction, and crocheting are a few of her hobbies.  Dr. Keller is a professor at Seton Hall University.


  • Evaluations and follow up counseling for bariatric surgery candidates
  • Evaluations for children and adolescents who may have ADHD 
  • Veterans who are looking for individual and group therapy outside the VA system, Includes C&P DBQ evaluations when needed
  • Adults with anxiety and/or depression


Heidi Keller, PhD.

  • NJ Licensed Psychologist (#35SI00466400) 

  • BA in Psychology and German, Lewis and Clark College, Portland, OR

  • Ph.D. Counseling Psychology, Seton Hall University

*Dr. Keller participates in the following insurance plans:


    Horizon BCBS

    Cigna & Medicare



Hillary Grennan is a Licensed Clinical Social Worker who has many years of experience working with children, adolescents, adults and families. She specializes in working with those who struggle with anxiety, depression and trauma. Her theoretical approach is rooted in Cognitive Behavioral therapy. She is a Certified Clinical Anxiety Treatment Professional (CCATP) and holds a certificate in Intensive Cognitive Behavioral Therapy. Hillary has over 10 years of clinical experience, using compassion, acceptance, creativity and empowerment, while implementing effective, personalized techniques. Hillary guides her clients on how to utilize their strengths and inner resilience to overcome the challenges of life.

Hillary has counseled in different therapeutic settings, including school based, in-home, and outpatient mental health centers. Her client-centered style allows individuals to feel safe, heard, and empowered on the path toward gaining the insight needed for positive movement.



Hillary Grennan, LCSW

  • NJ Licensed Clinical Social Worker  (#44SC05610700)

  • BA Communications, Mercyhurst College, Erie, PA

  • Master of Social Work in Direct Practice, Rutgers University, New Brunswick, NJ

Hillary Grennan


With each individual, couple or family, Live Well Psychology Center professionals customize the approach based on the identified problem, individual needs and what science has shown to have the best clinical results.  We collaborate with medical doctors and other professionals where appropriate, but only with the client(s) written consent.  


Live Well Psychology Center offers expertise in proper diagnosis and treatment for an array of emotional, life and and behavioral issues.  With warmth and with a respect for the latest psychology research and literature, we tailor our approach to each client’s individual needs and goals. 


Live Well Psychology Center requires and values family participation for children under 18.  The first session must include at least one parent.  The second session is a family session (the household).  The third session will be determined based on findings in the first two sessions and may involve the child or teenager coming in individually.  

Dialectical Behavioral Therapy (DBT) Skills Group for Teens

This group is for teens ages 14-17 who have a difficult time regulating emotions and behavior, such as those struggling with impulse control, interpersonal relationships and self-image.  The goal is to help these teens change behavioral, emotional, thinking, and interpersonal patterns so they can feel more confident and in control of their life.  The next group begins the first Thursday of October.

If you are interested in learning more about this group and/or joining this group, please contact Brittany Wool, LPC at Office: 973-726-5200  Cell:  973-600-1532 or Email:




At times it is wise to seek and invest in a professional to help us work toward greater emotional connectedness, understanding and harmony as a family or couple.   Family systems psychology, attachment / emotional focused theories and cognitive behavioral therapy are utilized for couples and families.



Dr. Miller offers a two session “Family Health” evaluation which concludes with a diagnosis and recommended next steps for changes for families who would like professional advice on how to move on their own toward greater harmony and tranquility without participating in extended psychotherapy.  


Individuals who are considering or have already begun the process of scheduling bariatric surgery must be cleared psychologically before the surgery can be performed.  This evaluation is done over two sessions.  Many aspects of an individual’s life are taken into account in order for the surgeon to understand the patient.  Dr. Keller underwent bariatric surgery in 2008, so can answer many questions in addition to the evaluation.  After surgery counseling is also available. 


This comprehensive screening is for children and adolescents who do not want to start out with the child study team at school.  The report and evaluation can be furnished to the child study team and/or a physician who may recommend medication, if desired.  Dr. Keller’s son had ADHD, so she is aware of the concerns and fears parents and their children can experience with starting a screening process.

The evaluation includes:

• Thorough intelligence testing

Behavior analysis/checklists

Computerized attention assessment

Memory and processing speed screening

Abbreviated written repost with suggestions          for intervention


Therapy is offered for veterans who are looking for individual and/or group therapy outside the VA system.  If a C&P DBQ form needs to be completed, Dr. Keller can provide one for the veteran to take to their C&P evaluation to facilitate a prompter resolution.  She worked for the VA for five years so is familiar with many issues that veterans encounter, whether they served in a combat zone or not.


  • health

  • vitality

  • peace

  • authenticity

  • bravery

  • ability to laugh

  • ability to love and be loved

  • energy to give

  • emotional intelligence

  • social success

  • social awareness

  • self awareness

  • great decision making

  • excellent parenting


  • repetitive worry thoughts

  • sadness

  • panic

  • family and relationship pain

  • division

  • anger

  • fear

  • impatience

  • being stuck

  • symptoms

  • drama

  • poor decisions

  • addictions

  • compulsions



Research has shown that great damage from divorce comes from parental conflict.

Research has also shown that it’s valuable for a child’s health to maintain a healthy relationship with both parents after divorce.   When children have distorted views or “black and white” views of one parent, it is valuable to help that child to create a more reality based viewpoint.


Dr. Alexandra offers a weekend intensive for families with children who are at risk of becoming “alienated.”  This program is for separated or divorced families in which the child(ren) are refusing or resisting spending time with one of the parents.


The program involves an entire weekend in which all members of the family (all members of both households) spend the weekend away with Dr. Alexandra and a supporting psychotherapist. The family spends the weekend in psychotherapy (child only, parent only, entire family) and in recreational activities designed to build positive associations and healing.  


The weekend involves a careful intake process as well as an after-care process to work toward successful long term relationships between the children and both parents. 


This innovative approach seeks to break repeated negative cycles of conflict involving parents and children.  These negative cycles also often involve frequent litigation.   


Insurance not accepted for this service, please call for fees.



Dr. Alexandra’s recent book to teach resilience, hope and joy in the face of obstacles


Dr Alexandra Miller Clark has published a book entitled “There’s Always Hope.”  The book was written with love to teach children about how to appreciate the joy of life even if things don’t

go as expected.  It can also serve as a symbolic gift for an adult who needs hope.  

Order your book via and bring it in for the author’s signature!  

Please check out the other books & resources that 
Dr. Alexandra recommends for:

Books & Resources
Contact Us


For more information

or to make an appointment with

Live Well Psychology Center, contact:  



48 Woodport Road, Suite 22

Sparta, New Jersey 07871

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