I'm terrible at blitz. Come to think of it, I'm not too great at standard either. OTB at local clubs, I probably lose more games that I win. Maybe that's because I started playing fairly late in life.
But, I really love this game. Every loss is a lesson and sometimes it's the same lessons trying to work their way into my permanent memory banks. I have fun playing. I like playing stronger opponents because they are more likely to punish me for my mistakes and I get a free lesson out of the deal.
I try not to focus too much on the win/loss ratio. I enjoy the games where it's a good fight right to the end and I didn't blunder away a lot of pieces. If I can give my opponent a good fight over the board, then I consider it a good game....regardless of the outcome. If the game wasn't fun, I wouldn't play it. Life can be frustrating enough as it is.
I've also heard it said that some of the best blitz players also happen to be some of the best slow chess players. Lot's of slow chess and analyzing their game has helped build up their pattern recognition ability.
My only advice for this would be to slow down and think about what's causing your issues with chess. If certain responses of yours are triggered by internet blitz chess, it would be advisable to eliminate this gradually, so as not to have withdrawals. I think it could be a good idea to slowly but surely replace chess with another activity. Has chess subsumed all of your hobbies? That would be a bad thing. The only real solution is to find a way to focus on something that's not chess, and to potentially come back but with an emphasis on balance in your life. Balance is a key word here. I sincerely hope you get help with this problem.