Pretty similar to most it seems:

Started at 16/17 with depression mostly. Just being "angsty",

The first time it felt really bad was when I was about 24 with a two month manic episode. Didn't end up in the hospital (somehow) but I DID end up with a crap ton of debt. Awesome.

I had a series of intense episodes after having my daughter at 29 and have been really struggling with it the past few years. Finally feel like I'm getting things under control though.