I'm in the same place, man. How old/tall are you? The screwed-up dating market, combined with my uber-manlet tier height, have made life pretty damn difficult for me.
Honestly, while it isn't a popular opinion, every time I watch Messenger Rising MGTOW videos (now Lazarus on Youtube), it really calms me down. His main message is that we need to lower our expectations in life and towards other people in order to avoid being disappointed. He has a philosophy that every traumatic event can be a learning experience and lead to growth, if you allow it to. At the very least, it'll help you feel numb rather than absolutely miserable.
His personal story has helped me see how things can definitely be worse in relation to women and has given me a certain appreciation for my life, even though it isn't the ideal life that I would have wanted. The biggest thing I'm still trying to overcome is my jealousy of other people who have had it way better than me, and my desire for a certain type of love that I know is irrational.
Over time, and somewhat in part due to his videos, I kind of developed my own philosophy that "you already exist, you might as well try to enjoy the time you have left on this Earth rather than feel miserable about it". Another idea that I'm trying to adopt is the idea of having a "focus" other than women and being forever alone. If you can fully dedicate yourself to something else besides finding a partner and being forever alone, it's a good way to cope. In high school, I was a total computer nerd and built all sorts of game mods and software which distracted me from my inceldom. Hell, I even hacked my way into a school admin account and wiped one of their computers.
Obviously, the way I'm coping isn't 100% effective, otherwise I wouldn't be here. But, hopefully it's a step in the right direction.