Big Mountain Mental Health, PLLC is a mental health practice serving the Whitefish and Kalispell area. Led by therapist Sam Harkness, the practice works with adolescents, adults, and families facing complex and longstanding concerns including depression, anxiety, PTSD and trauma, borderline personality disorder, self-harm, codependency, low self-esteem, anger, parent-child conflict, substance use, and gender identity concerns. Its therapeutic approach focuses on trauma, attachment, identity, and the influence of personal history on present relationships and self-understanding, with the goal of helping clients build steadier relationships, a clearer sense of self, and greater peace and purpose. In addition to therapy, the practice provides case management and referrals for mental and physical health resources.