understanding the Stages of Health/Illness and family interaction

Why is important for the psychiatric mental health nurse practitioner to understand the Stages of Health/Illness and family interaction? Why is crucial for a good psychiatric diagnosis and treatment to perform a Complete comprehensive family assessment.-Identify and put some examples of family issues requiring primary, prevention intervention.* (As PMHNP we can work with our community preventing behaviors that affect our families like Smoking, and drug abuse [or other problems] that negatively impacts the health of the family members.)Your post will be checked in Turnitin for plagiarism. Responses should be a minimum of 250 words, scholarly written, APA formatted, and referenced. A minimum of 3 references are required (other than your text).