The Stop Sign technique is a good one for keeping your mind from replaying all those bad movies. Why would you want to watch a bad movie over and over? Picture a big red STOP sign and change the mental channel.
Also, the single biggest help to me was joining an adult rock band class (think School of Rock for grownups). Guaranteed one night a week where I would not be thinking about my sitch - and you can't be unhappy while drumming rock songs! (Caution - I would nOT advise joining a blues band - or a country band! LOL)
