Watch what you say. Words have power. Make a list of stressors. Concentrate on the 'can-do' list. Otherwise, you will be constantly frustrated and waste your time trying to change things you can't possibly control.
Aerobic exercise is an excellent way to reduce stress.
Find time to be alone. Take a few minutes by yourself to take stock and unwind, or just sit and be quiet. If you think you're too busy to take a few minutes for yourself, try scheduling your quiet time. Inoculate yourself against stress. Use your favorite technique to relax deeply and imagine the anticipated situation while you're in a relaxed state.