Music has a healing power of its own. It can lift the spirit when down, or make a happier person more depressed. Play an instrument, or start playing one. Pull out the guitar, harmonica, clarinet, recorder and start to make music. If you don't have a musical instrument, then sing.
Music is good for the soul.
Exercise - walking, running, tennis, hiking, water aerobics, swimming, horse back riding, bicyling. Talk with others, share your feelings with friends. Do something kind to someone. You will realize that you can make a difference. Watch the stars, planets or moon at night.