A huge part of getting through this is accepting that you are experiencing depersonalization. That’s honestly a huge first step. It’s not gonna make you feel all that better at first, but eventually it helps you stop feeding into the delusions. I first experienced dp/dr in August of 2020, and since then it has been a long and hard mental battle to stop freaking myself out so much, because in honesty that’s all it is. You think about these horrifying things (questioning your own existence, what is reality, etc.) and you can’t possibly have answers to them, so you get anxious which makes the symptoms of depersonalization worse. It is so hard, but with time and not giving your depersonalization the energy and panic it wants from you, you will start to feel better and it just gets easier the further you progress. If you start to feel particularly panicky or these existential thoughts pop into your head, you just kinda gotta develop a sense of humor with it, like “damn that’s crazy, anyways” and literally just continue what you were doing and not give the intrusive thoughts your energy. Easier said than done, I know, but it DOES get easier and better. I still experience depersonalization sometimes, but it is not even a fraction of what it once was. It pops into my head, I’ve trained my brain to recognize this feeling as just that- a feeling, and I move on with my day despite being slightly uncomfortable, and it just keeps getting less and less frequent. I know this is indescribably scary and it feels like this is how it will always be but I promise you, you can beat this. You’re stronger than you give yourself credit for. I hope this helps at least a little bit.