OP, I don't mean you're literally sitting at home crying. Substitute sitting at home crying with whatever it is you actually do that is not a useful solution.
Have you ever read any Alain de Botton? He introduced a lot of different philosophers to me and I honestly found so much of it helpful. One of the main things I remember reading was that the key is just to be happy. I don't remember the exact quote, but it's something about being alone and happy, in despair and happy, dying and happy. I can't remember who said it, but the concept stuck with me. I guess it is tied to acceptance as others have mentioned above. They key is not about altering our circumstances (which can't always be done), but altering our minds.
I did philosophy at university and I still read some philosophy now, I find a lot of it really helpful.
Thanks to all who left kind messages for me.
Cutie It was a fucking long process, like over a decade, and many false starts and fuck-ups, but I think I was really always determined to get better and so I can't really say what started it, because really, I was always trying to get better. I basically had some form of anxiety/depression since I was a child, so it did take a really long time to make any progress. I'd say a massive turning point for me was moving to Korea - in Korea, you show up to work and you get on with it whether you are dying from lurgy or not. You get 10 days holiday a year, total. It is brutal - but honestly, it's what I needed. Before, I was always making excuses about not being able to work cos I was too anxious etc, but once I was forced into it, I just did it. Now it's been something like 3 years since I took a day off for any kind of illness - considering I couldn't hold a job down for more than 6 months before, that is HUGE for me.
A lot of other things, therapy, self-help, not drinking/taking drugs, not getting involved with assholes... but for me, being forced to work and abide by structure and rules was huge.
Oh I also did a course on mindfulness, that helped a lot. The first few times I thought it was useless, but after a month or so, it really started to help. I still meditate now sometimes (18 year old me would be cringing) and as cheesy as it sounds, I cry sometimes when I do it because my mind feels so clear and it's such a relief.
Sorry OP not massively relevant, just answering a question.