Derealization / depersonalization . how do i get rid of it? how do i cure it? do i need medications or do i just wait? i got it from smoking pot.

Pot smoking: can produce psychological side-effects such as you mention along w/paranoia. This is simply my clinical observation and sounds accurate in your case. Please see your doctor for reassurance that all is well medically and a mental health professional to help you manage your symptoms until they resolve. Peace and good health. Healthy diet and exercise is always a plus.

I agree with Dr. Self and I would like to add: it is important for you to get help with these symptoms now. If you delay they could become worse. Please have a physical exam to know if these symptoms are due to an illness. I not, please see a Clinical Psychologist with expertise in multiple types of psychotherapy to evaluate and help you with these symptoms, and a Psychiatrist for medication.