I do have depression, I've suffered from it since I was 15, and it wasnt until 2 years ago I actually went to a therapist and a psychiatrist, talked about everything thats happened, everything that I was feeling, and got on medication for it.
Some days are better than others, I do still have bad days, and when theyre bad, theyre REALLY bad, and they can last for a couple days up to weeks at a time. I feel like for anyone who does have depression, it doesnt go away, obviously. The medicine does help, but sometimes, the blinders come off and you go back to that sad time.
My pyschiatrist always told me that depression prevents you from appreciating the little things in life. A person without depression can appreciate a bird flying by, and think about how it makes their day better or something like that. Someone with depression just thinks of it as a bird.
I do have good days too, and when those good days come around, Im very appreciative of them.