I am sorry you are having to cope with these difficult symptoms. The first half of what you’ve said sounds like it is an exaggerated but fairly normal range if you are actually out of a job — but from what you are saying this condition has gone on for four years and has become paralyzing. This, combined with the fact that you are feeling paranoid, monitored, and reclusive means that it is time to take action. This is not going to go away on its own.
You have taken the first step by writing to us here. I would recommend that you add to this courageous act a visit to a psychiatrist. He or she can give you more feedback on these symptoms and offer some ideas about options for treatment.