Now, DP/DR is a state, where you feel like life and especially ego is an illusion.
Here is my take on it. DP/DR is an enlightened state of a person who simply don't want it / not ready for it. People who get in DP/DR, I think "accidentally" get into the enlightened state, because they kind of feel this is what will solve their problems in life.
Anyone who feels these words apply to him/her, I'd suggest to take this without fear, and understand this state is not something you want, and that you can get back to "ego" anytime you wish. There are people whose GOAL is to achieve enlightenment. That is fine. But there are people who are just curious, and accidentally get there. If you want to get spiritual, I'd say if you still have those "egoistic" goals in this life, just accept that this lifetime is not the one you want to get enlightened in, and let go. You CAN get back to ego, anytime.