Have you tried making a list of reasons and potential reason to stick around? I've been in a position where the only good reason I could come up with was the fact that nobody else would take care of the three bratty cats I'm responsible for. Not much of a reason maybe but it's workable. Also try reading this post:
http://forums.psychcentral.com/showp...00&postcount=2

Take care and try to come up with some reasons. I'm sure that you can.