The best thing you can do is distract yourself. In order to overcome DP, you have to change your way of thinking. You're mind is use to having those negative thoughts in your head, if you distract yourself and I know its hard to, your thinking pattern will change. Believe me, it feels like my DP is 24/7 but when I get out and hangout with friends and get my mind off it, I get relief for a little bit.
Try also cutting out sugar and caffiene. You might already know this, but its a helpful tip.
DP is temporary, remember that, that's what always keeps me going. I know its hard to tell you to just not think about it, just distract yourself. It'll make a world of difference for you!
If you have any questions, ill be glad to try and answer them