I discovered recently I have a lot to think about. Many, many conclusion and memories about this life are jumping in my head.

So I dare to say to yourself, that are searching for a cause of the depression, to not be your own doctor. I certainly was mine and it worked like hell.
Of course a good doctor must be found and those are rare and a gem. The smart doctors need to treat the smart people.
I succeeded so well at school that any of the doctors that I had, thought my problem and defect wasn't thinking to much... I am not schizoid as they sad, I don't have much social anxiety... anxiety of course, but mainly f****** (!) depression.
A kid that has depression since kindergarden? No one notices, because she do what in her little small word is her passion, her escaping mechanism and what is only expected and allowed on her: do well at school!

To just finish, to anyone that identifies with me, antidepressants for obsessive people (namely fluvoxamine) has done wonders for me, and CBT, namely schema therapy is hitting in the right place.
If you have access to it go for it!