Imagine? You're 17, right? Shouldn't you be at school instead of obessesing over DP? I recently started again, and let me tell you now: it serves as a great distraction from my derealization. I have seen a gradual improvement in the things which were bothering me before. I also feel as though my memory is getting better, too, as I'm constantly being reminded about deadlines.
You simply need to distract yourself. Trust me on that.