It's not as bad as you think. Believe it or not you can get used to it after a while. You start to see what makes it worse and so become wise to it's ways and the fear of it reduces a lot. I've had it for many years and noticing the dp on bad days does sometimes make me feel a bit sad that I've been unable to shake it after all this time. But there is always the chance it can go away, even after decades of having it.
For me, it depends on whether I'm presently accepting it, as well as what external factors can make it difficult to cope with. When I'm left to my own devices and don't have social pressures to "be normal", I can often just accept it and even at times enjoy the places my mind goes to.
It does get easier though. That doesn't mean it's always easy, it just becomes a part of what it means to be "you", I guess. You adapt.
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