The linden method is a very general approach to dp/dr, no special diet, magic formula, secret pill or magic bullet. Its several basic points listed to follow in order to improve and eventually get better. I didnt do it but read about it on the archives of this site. Look it up, but be careful of your expectations. one piece of advice Linden gives is to never discuss dp/dr with anyone, to ignore it and force yourself onwards. Provided you can be mature enough and strict enough with yourself to seperate real life personal issues from symptom swapping, I'd say give it a go. Although this will seem very very difficult a task to someone in the depths of dp/dr or at the beginning stages of this disorder.
My advice is to list out your bad habits and things that put you at a loss, and stop doing them. Even if you try to sort your life out while on the best antidepressants, go to the best therapists etc, if you are simultaneously avoiding issues by boozing, drugs, whatever, you will go straight back to square one. Good luck.