I suppose you overdosed on recreational drugs, possibly marijuana.
Feeling paranoid has both a psychological component (due to a low self-image perhaps) and a biological component.
The latter needs to be treated first before considering psychotherapy.
Most drug users have been found to be
hypoglycemic. This indicates that they may have a problem converting glucose into biological energy called
ATP.
This energy is required to manufacture the feel good and relaxing hormones such as serotonin.
See:
Biological Energy Required in Serotonin Production - SAM-e
When a person gets off drugs, the biological abnormality that caused them to use drugs to self-medicate, may come to the surface with a vengeance.
The hypoglycemic condition can be tested with a four hour
Medical Test for Hypoglycemia. and the treatment is going on a
Hypoglycemic Diet
After treatment of the biological aspect the person could possibly benefit from a course in
psychotherapy..