I keep a list, that I look at every day, of four things that help me keep my life in balance. They help me structure my day, and if I cover them all, then life is good. They'll be different for everyone, but mine are:
1. Exercise and eat well
2. Always aspire to excellence, whatever I am doing
3. Reach out to others
4. Get organized
These are four things that make me happy and make me a better person, physically, socially and emotionally. I really notice when one or more is missing.