There are many types of depression. Some may be triggered by particular events (like a death of a loved one or loss of job) and some may not be. That's why many people say that they don't have a "reason" to be depressed. Chronic depression is a disease of the mind and requires treatment just like any other disease. It doesn't just "go away". I found this to be a good resource when I had depression. Hopefully, it helps us all understand depression better.

http://www.wingofmadness.com/index.php/Dia...-Feel-Like.html

I didn't see a psychiatrist or even a counsellor. I did tell my GP about it though and I was very honest about it. When it got really bad and I was having terrible insomnia, she prescribed some mild antidepressants for me. That helped me but I was adamant not to be drug-reliant and so, after informing my doctor and having her approval, I monitored myself and slowly cut down the dosage until I was completely weaned off it.

And I completely agree with those who suggested exercise. It's an excellent way to increase the production of "happy hormones".

Good luck and I hope those of you with depression overcomes it soon.