depression treatment

I want to hold your hand in silence. I want to scream at the world with you and rub your back as you weep. We both know your strong, we both know you can push past this; and if you need me to remind you of this I always will.
American depression rates fall behind only India and China. In an article from U.S. News and World Report, the WHO tracked "quality years of life lost due to disability or death," and reported researchers found the U.S. most affected by not only depression but anxiety, schizophrenia and bipolar disorder.
As a family therapist with many years of practice under my belt, I've had the occasion to see quite a few women -- and men -- who have lost their voice in their intimate relationship. Interestingly, sometimes this "invisibility" disguises itself as anger, and becomes hard to recognize.
Dr. Z met me at a coffee shop on a rainy day in San Francisco. We sat across from each other, sipping hot coffee as funky 70s music boomed from the speakers. It felt horribly out of place considering what our meeting was about: her suicide attempt.
Why are some people happy and some are miserable? Why do some people who struggle with depression find ways to pull themselves out of if they implement some proven tools?