Hi. I am relatively new here, and hope this will help me (and possibly others).
You can call me any othe the names of the Norse gods. I'll understand who you mean. Personally, I prefer being called Odin or Loki.
I guess my depression started when I were a small kid. My oldest sister, Petra always played with my youngest (older than me though) sister, Sophia, and I never got to join them. My childhood was spent mostly reading and spending time with my only friend, Rune (it is a weird name in English, but I don't live in England or the USA). Our friendship started it's destruction when he met my little brother, Nikola. Weird as it may seem, almost all my friends left me at some point, and became my brother's friends. Sonja, the middle sister, was always busy with homework and stuff. I don't really know my own family. Sophia was mostly with Petra. Nikola always seemed to get all my friends for himself. I had another friend, Kenneth, and we were best friends for a few years. He never got a fetish for my brother. He was kind of a cross-dresser, and when we played he always was a "girl". He was kind of an outcast, like me, which could be the reason we were so good friends. He kept me from depression for some years. After some time, we started meeting less often, and now it's more than a year since last time we met. When I was around the middle of 6th grade, I moved to another school. There I got a new friend, John (that's the best translation for his name). He didn't have many friends because he was a bit fatter than everyone else. I was happy. But then, when high school started, we got placed in different classrooms. I was placed in 8D and he in 8B. We didn't meet as often, and after some time, we didn't meet at all. We are still friends, to some extent. When we meet we say hi and all that, but we can't just sit and talk or play PC games anymore. It feels like he has replaced me.
The final blow (with already some periods of depression) was made by my sister. It's ironic, my own family, my own proverbial flesh and blood, was what finally broke the dam. A friend (I will just call him "M") who had just been abandoned by the one he loved, was talking to my sister. Now, it just so happens that my sister almost never speaks with me, but has conversations with M every day. She has ignored me earlier, but this was something more. She abandoned her own brother to help a friend. She may not know it, but by saving M from depression, she threw me into it. Basically, I would say she accomplished nothing.
That's me and my depression in a nutshell, if you define a nutshell as a long post on a forum.