The health belief model originated in the 1950s by a social psychologist in the United States who worked for public health services. They were trying to explain the widespread failure of people who did not want to participate in programs to prevent or detect disease (Glanz, Rimer & Viswanath, 2008, p. 46). Since the 1950s, the model has been widely accepted to conceptualize health behavior research frameworks to both explain the change and maintenance of health behaviors and to provide guidance for incorporating health behavior interventions (Glanz , Rimer & Viswanath, 2008, p. 45). The health belief model consists of several key constructs, which are perceived susceptibility, perceived severity, perceived benefits, perceived barriers, stimuli to action, and self-efficacy. According to Rosenstock, 1974, “these combined levels of susceptibility and severity provide the energy or strength to act and the perception of benefits provides a preferential path to action (Glanz, Rimer & Viswanath, 2008, p. 49).” In other words, allowing an individual to come to terms with their health risks and susceptibilities can allow people to formulate a change based on their belief system based on perceived risk or benefits. Diagnostic and Statistical Manual of Mental Disorders, 5th Edition indications for Post Traumatic Stress Disorder, “an individual must have a history of exposure to a traumatic event that meets specific criteria in four symptom groups, which are intrusion, avoidance, negative changes in cognition and mood, and alterations in arousal and reactivity (American Psychiatric Association). , 2013, Diagnostic and Statistical Manual of Mental Disorders, 5th ed.). The concept of perceived susceptibility to define populations at risk c...... half of paper ... or change is evidently ongoing. Regarding PTSD, I continue to discuss therapy with Veterans Affairs and follow up with constant reminders using calendars, which help promote healthy behavior through social interaction and education. I observe my environment and stay away from factors that facilitate substance abuse and triggers that can have a negative impact, such as smoking tobacco and excessive drinking. In conclusion, self-efficacy, "the belief that one can successfully perform the behavior required to produce the expected results (Glanz, Rimer & Viswanath, 2008, p. 49).” I feel very empowered to change my target healthcare behavior Through continued education and advancement in the Veterans Healthcare system, I am able to remain vigilant regarding ongoing therapy for PTSD while addressing harmful behaviors. for health such as drinking or smoking excessively.