The job I have takes a positive attitude to get through the day and deal with rejection, difficult people, etc. Like others relate here, I've had to learn how much contact is too much when dealing with friends/relatives who are negative. Recently a co-worker left the company because she realized the job wasn't working out for her... the reason was every day she approached things with a defeated attitude. Projecting failure is a self fulfilling prophecy. Clinical depression is serious. Getting medical help is an important move.