Organize your work area. Do not get in the habit of moving the same piles of papers around. If necessary, stay late one evening and go through every item on your desk and in-basket. Do not go home until everything has been tossed, filed, delegated or prioritized with a timeline. Then, make a commitment to yourself to leave your desk completely clean at the end of each day.
Nothing reduces stress like organization.
Three 10-minute walks are just as beneficial as one long walk. LET GO of problems that aren't yours or are out of your control. Look for the humor in even tense situations. When I present programs at companies throughout the country. I frequently ask employees what would help them to do a better job.