How do you treat depression and isolation from friends?

Depends: How to treat depression is based on what is the cause/source of depression. Is something happening in your environment that is causing your depression or is it genetic. Isolation from friends or isolation/withdrawal from people is a symptom of depression. Seek an experienced therapist to help you problem solve if you continue to have trouble.

Depression: Start with a medical evaluation to rule out medical causes of your symptoms. Medications are sometimes indicated. Talking therapy to include Cognitive Behavioral therapy or psychotherapy can be effective. Aim for daily exercise, 8 hours of sleep per night & good nutrition w 5 servings of veggies & 4 of fruit per day. Try tai chi, yoga, Qi Gong, progressive muscle relaxation, deep breathing