When you think of hobbies keeping you healthy, I bet you are thinking about ones that are physically active. It is true that keeping fit will help you stay healthy but often mental health is not taken into consideration at all. Studies have shown us that happy people live longer than depressed people. Depression kills, depression is unhealthy.
In order to keep yourself happy and depression free take up a hobby that is mind challenging and fun. Try guitar lessons, photography, training a pet, knitting or learning something new that you wanted to do since you were little. Even meeting with old friends you have not talked to in years or putting a scrapbook together can bring interest back into your life. Don't let the economy get to you. You don't have to spend a dime to be happy. Happiness is a frame of mind. What ever you do to find that frame is all you need to stay there.