- Get to bed on time.
- Sleep in. (You might not get to sleep in until noon, but if it's a busy season of life, going to bed 30 minutes early and sleeping 20 minutes later can go a long way.)
- Eat healthy. Lay off the sugar. Limit caffeine. Eat a few fruits and veggies (Who am I, your mom?)
You might do these things and still be stressed, but I think simple things help more than many of us want to admit.