I wouldn't give him/her any advice involving God. Instead, if I really had to help as best as I could, I would tell him/her to stop relying on God to do everything for him/her and refer him/her to a very good therapist or psychiatrist (possibly one specializing in personality disorders like borderline) near where he/she lives. Maybe even you, lol.
That is the best I can (and should) do, especially that I pretty much suck when it comes to giving certain advices.
By the way, were you a "born again Christian"? Or do you mean the mainstream type (Catholic, Orthodox, Protestant, etc.)?