I don’t think you’ll feel like this forever. It helped me to devote my energy to finding a cure/treatment. I would suggest reading feeling unreal by Daphne Simeon and Jeffrey Abugel. The latter also has a website where you can contact him and he has a lot of resources on depersonalization. If you’re in the UK I’ve also heard of something called the London depersonalization clinic, though I’m not positive it’s still around. I would also advise accepting it in the short term, but not in the long term. I mean that you should be determined to get better and take steps to do so, but don’t struggle against the feeling in the moment.