I'm not really prone to depression, generally; I don't have the extreme mood swings most of the time. Nothing like some people I've known seem to! Bright sunshine helps & when I can chat with a few people, that's good, too. Sometimes, of course, even when you know what'll set you off, whatever way, you can't avoid it happening, either due to it 'coming out of the blue' or not being, effectively, able to walk away when, perhaps, you 'should' have done.
Yeah, in theory, nobody's stopping you doing whatever you want (that isn't illegal) but, in practice, plenty of people might, for whatever reasons, try to stop you. Sometimes, it's because they really think you're making a 'bad' choice & they do care & all that stuff. Personally, I can't & won't judge what anybody's 'motives' might or might not be, I don't think I can tell & it is, actually, irrelevant to the truth of the matter in question.