Perspective is everything. When you read the newspaper and see the stories about all the suffering in the world, you'll realize how lucky you are -- look at it this way: if you had cancer and were on chemo, you wouldn't even have
hair to worry about!
When I have a bad day, a couple of things help. A long walk or hike in the woods is very good for getting my mind back on track. Also, when you focus on others, by helping them or just listening to their stories, it lessens your focus on yourself and your troubles. This board is a great place to help others, read about their problems, and so forth!
I hope you're feeling better soon. Remember, hair grows, tears dry, and God doesn't give you anything more than you can handle.