The dream, in which you took the cocaine, shows your state of mind, where you feel useless and exhausted. Perhaps you are trying to get out of your duties and dedications. You have no arrogance or pride and would do anything to get out of the life you are living at the moment. Alternatively, the dream may suggest you to have more fun and try to relax a bit in order to get satisfaction.
Read more about dreaming of Cocaine in other dream meanings interpretations.