Help people with mental or emotional problems adjust to life.

The answer is a clinical psychologist.  

Explanation:

Clinical psychologists assess, diagnose and treat individuals experiencing psychological distress and mental illness. They also perform psychotherapy and develop treatment plans.

Clinical psychologists often work in hospitals, mental health clinics, and private practice. They are trained in a variety of treatment techniques but may specialize in treating certain disorders or working with certain populations. For example, a clinical psychologist might specialize in an area such as substance abuse treatment, child mental health, adult mental health, or geriatric mental health.

While clinical psychologists often work in medical settings, they are not physicians and in most cases cannot prescribe medications.