I disagree. Go to a psychologist. Psychiatrists are widely regarded as pharma-sponsored drug pushers. While the OP may need medication, medication is only one tool in combating depression.
A psychologist will help you identify the root cause of your depression in a calm, non-judgemental atmosphere. He or she will explain to you how the various defense mechanisms in your mind work and how they can result in the types of thoughts and thought patterns that led to your depression. A good psychologist will help you see for yourself what is wrong and how to fix it.
JSON.org License Literally Says it "shall be used for Good, not Evil": https://news.ycombinator.com/item?id=3693108
But, there is always the problem of defining evil: http://www.youtube.com/watch?v=JRxl02mULws
How long before the oath says "Except for IBM, its minions and customers..."?