If your daily schedule would tax a campaigning presidential hopeful, something's wrong. Cut back on commitments until you've got a handle on your stress. Develop a hobby. Make sure it's not a competitive endeavor, just something you can relax and enjoy doing for its own sake. Buy yourself flowers, visit a local museum, or watch the birds at your birdfeeder.
Nature is a natural destressor.
Develop a support system. If you lack supportive people around you, seek out people who are willing and able to be supportive. Turn off the news and watch a funny movie instead. It's unrealistic to think we can eliminate all the stress in our lives. But we can certainly change how we deal with it.