When I was in therapy many years ago my therapist switched gears on me one day and said, "Today we're going to do something different; instead of telling me what's wrong, I want you to share with me what's going RIGHT in your world."
Naturally I explained to him (through gritted teeth) that I was not paying him because I was happy, I came to him to get help with what was making me UN-happy! But he convinced me to try out his suggestion, just as an exercise that he thought would be beneficial. I could always, he added, go back to the way things were next time!
Through this exercise and working with a book called "Feeling Good" by David D. Burns I learned some great techniques for feeling better in even the lousiest situations. I've listed some suggestions these exercises taught me in the hope that it will encourage someone interested in the subject to pursue it further.