Addiction therapists & psychiatrists in Crystal Lake, IL

My commitment to therapy isn't just professional — it's deeply personal. With fifteen years of hands-on experience, I've navigated my own life journey and know firsthand what it means to search for purpose, confront unresolved barriers, and actively fight for inner healing. That lived experience is the fuel behind everything I do.

I am lively, warm, and I truly never meet a stranger. I welcome everyone with open arms and bring an uplifting, hopeful energy to every session — while also being the kind of counselor who will sit with you safely in your pain with a deeply empathetic heart. I am fiercely loyal and dedicated to your long-term growth and victory.

I work with faith-based individuals and spiritual seekers, adults in transition, adolescents and young adults, couples, and those navigating trauma, addiction, and recovery.

My style is eclectic and strength based. I see human nature as intrinsically good. Sigmund Freud said we are bio-social animals. I believe a great deal in listening to one’s self talk. The more positive our dialogue with ourselves is, the more positive our dialogues with others and our lives are. I’m also experienced in CBT, DBT, MI, Solution Focused, ACT, Gestalt, Interpersonal, and person-centered counseling.

My training includes lots of wonderful supervision and workshops, a three-year certificate from the Gestalt Institute of Chicago, and two one month intensives with Virginia Satir, the founder of family therapy. Virginia taught that exploring the self is like mining gold. We all have gold inside of us. That is our basic goodness. A lot of emotional suffering is the result of being detoured from that basic goodness.

Starting therapy can feel overwhelming, but my goal is to create a safe, collaborative, and supportive space from our very first session—whether you come as an individual or as a couple.

My client-centered, trauma-informed approach means your stories, values, and goals shape the work we do together. I help teens, adults, and couples heal from past trauma, grief, addiction, navigate anxiety and depression, and build stronger, healthier relationships.

As a bilingual therapist (English and Spanish), I’m sensitive to the cultural and relational contexts that shape who you are and how you connect with others.

For clients who desire it, I can also integrate spiritual reflection into therapy, always honoring your level of comfort.

My nursing career began in 2010 when I first became a Registered Nurse. In 2017 I graduated from Maryville University in St. Louis, MO with my master’s degree in nursing and became a board-certified Family Nurse Practitioner (FNP-C) licensed in Illinois. I have been blessed to work in many facets of healthcare since and has also become a board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP-BC). With a strong foundation in both primary care and mental health, my approach aligns overall wellness and hormone optimization with physical, mental, and lifestyle well-being.

For me, I aim to help others transform their lives through compassionate, personalized care (with plenty of humor along the way). I specialize in working with people of color, student-athletes, and those who are neurodivergent. If you’re neurodivergent and reading this, you’ve finally found someone who specializes in and deeply understands your unique perspective. Whether seeking clarity on behaviors, understanding how you interpret the world, or navigating challenges, I am here to help.

Diana Lankenau has a Master of Science in Nursing from Florida State University and Chamberlain University. She has a Bachelor's in nursing from University of Miami. BA in Psychology from Florida International University. She is Board Certified Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) and Family Nurse Practitioner (FNP-BC).

Welcome! Join me on a journey to reclaim your sense of self, direction and empowerment. As a person who has struggled with life's hardships, I am compeled to help others in these difficult times. My credentials include; Licensed Professional Counselor (LCPC), Certified Drug and Alcohol Counselor (CADC) and an Illinois Certified Domestic Violence Professional (ICDVP).