VashtaNerada said:
running and working out in the gym helped me a ton
This helps in some part, but an actual depression should be treated with proper care and expertise. A psychologist, psychiatrist, or pharmacist, or even your neighbourhood social worker can help with this.
On that note: it's about time that mental complaints are taken as seriously as physical complaints. This thread kinda sounds like 'I have an infection. who knows what to do?' and the answers being 'drink plenty of fluids, and rub some seaweed on it.', or some other arbitrary home remedy.
And don't feel like I'm judging you in any way when I say: get help. It's the 21st century, and it's about time we stop treating mental complaints the same way we used to treat 'bad humours' in the middle ages. You could benefit a lot from professionals that deal with this kind of thing all the time, and don't walk around with an attitude like it's just you, you're crazy, and there's nothing to do about it. There's tons of people trained to deal with whatever you're having problems with that are more than happy to relieve your complaints.
So get some proper assistance. There is certainly no shame in seeking professional help, no matter what the stigma.
I swear, sometimes I think we're barely out of the dark ages.