How so when you suffer from brain fog? from not being able to concentrate? "Stop thinking about it" doesn't work. It's like forcing yourself to not think about the elephant but instead you end up thinking more about it.
So think of other mammals then. It's not about completely cutting yourself off from your thoughts. I have DP but in these last couple of weeks, it has gotten better and most of the times I don't notice it until, well, I actually think about it. Sure, I will, here and now, check in to see if DP is there and I think that is one of my setbacks.
There are things I did, however, to alleviate the symptoms and to improve overall health.
The most important part is your thoughts. Maybe it's wrong for me to say "stop thinking about it". But maybe "start thinking about everything else".
Start thinking about goals, self-analysis, what makes you tick and what makes you laugh. Explore your surroundings and just engage in the open world.
I'm not saying this will lift your DP but believe me, it can help. Accept the Dp as it is now, so yes, it is in your mind but it doesn't mean you have to constantly think about it.