I've had a diagnosed depression that I treated for many years with medication. And that course of treatment prolonged my illness and didn't ultimately work. What did work was to alter the way that I thought in the way I described above. And I'm not alone...research has shown that CBT and mindfulness training can be more effective than medication in treating depression.

The view that depression has only biological causes is dangerously naive, if not flat out wrong. Depression absolutely can be caused by unhealthy thought patterns.