"Maintain an Appreciative Attitude - Why not make a mental or written list of the things for which you are grateful?"
Sounds so simple but why are all the problems, petty or otherwise, the ones we dwell on instead? Instead of being depressed about the fact that I'm not traveling right now, wouldn't it be wiser to be grateful for all the traveling I have been able to do in my past and grateful for the fact that I have a good paying job in this economy and don't have to worry about paying my rent, health costs, my next meal, etc.? HA - silly human your problems are really so small and you have SO MUCH goodness spread out before you. It's like focusing on the rock in your shoe and missing looking out at the Grand Canyon right in front of you.
Bah - now if only I can remember this bit of wisdom!