I was on haldol (haloperidol) for a few years & i stoped it for 4 weeks, but nothing happened to me. only a bit of social anxiety.can you explain why?

Depends on Why: I don't know why you were on haldol (haloperidol). But many of the reasons that people take Haldol (haloperidol) are because it prevents things (psychotic episodes or manic episodes) that happen occasionally, but when they do happen very bad things can happen. So the fact that you feel nothing when you stop the Haldol (haloperidol) might not mean that everything is fine, it depends on why you are taking it. Talk to your doctor.