Things that worked for me:

- Run. Blood circulation and fresh air can do wonders. These days I bike to work than run. But the idea is the same. Start your day with cardio and fresh oxygen.

- Watch your diet. Sleep a bit hungry. Eat foods that exit your system within 24 hours.

- Abstain from sex (including DIV) for 10 days, and see how you feel on the 11th. After which find your formula, similar to intermittent fasting but with sex.

- Meditation and Yoga. I practice Hatha Yoga as taught here (http://www.ishayoga.org/). This is ridiculously powerful if practiced with intensity.