There is this theory that thinking about DP causes DP, but it might be just one of those things in the realm of "saying voldemort's name will summon voldemort." AKA it's nonsense. Before this episode I have now, I suffered from persistent DP for 2 years. I thought about it all the time, when I had it, because when you have it, it's torturing you. When you don't have it, you don't think about it, because it's not bothering you, simple as that. No conscious effort on my own part helped stopped the DP, or increase the DP, for that matter. I had no panic or anxiety. It was just that life was shit with DP, and life was normal (with its own normal ups and downs) without it.
I think people here have to suffer through bullshit mindgames about "trying not to think about the beast" because there's this dominant school of thought that thinks that's the key. Is that really the case though? If that's the case for you, then so be it - control your mind, brainwash yourself, try to block out the name "DP" from your mind and be convinced that will fix the problem. If that's not the case for you, for god's sake, don't torture yourself about it. Don't punish yourself constantly for thinking about the thing that's torturing you, despite what the so-called "self-help" crowd will preach. Be compassionate to yourself. Yeah, you're suffering. Maybe you can't think about unicorns and rainbows at the moment, despite your best efforts. Accept it, and forgive yourself.
But at the same time, that's just my two cents, so take what I say with a grain of salt. Everyone is a special little snowflake, and every DP experience is its own unique flavor (of shit).