I suffered depression for about 2 and a half years until a few months ago. I had only told 2 or 3 people before January when I started being more open about it; I hadn't told my parents or my housemate but he said knew, or guessed at least that was the case when he first met me. I had been working on helping myself for a while before I saw a professional, who told me that I had developed some advanced techniques and treatment. Apparently I've done a lot of groundwork for CBT myself and I was doing everything that any psychiatrist would be recommending, and they said there was little doubt and concern that I could overcome it.
Anyway, I'm feeling much better now. I haven't really relapsed since, and I'm starting to build confidence in myself again. Onwards and upwards.