If you're studying for an exam you're not thinking about the results. If you're always worried about the results, you can't study a lot. So to be engaged and detached from the outcome is excellent. Excellence is behavior. I mean, isn't that what martial arts is about? And that's what meditation is about, that's what, in many ways, sports are about.

From a scientist's perspective, to understand everything that you need to know about human beings, you only have to tinker with all the mechanical parts of genes and the brain until there are no more secrets left.

To maintain a youthful mind, write down two or three things you can do that are totally childlike, such as eating an ice cream cone, coloring a picture, or jumping rope. Find something that brings back the sense of fun you had as a child and choose one of these activities to do today.

Every day in every way, I am increasing my mental and physical capacity. I am reversing my biological age.

Are you in relationships with people who don't have your well-being at heart? Make a list of these, and consider what you can do to protect yourself from their toxic influence. Sometimes, setting better boundaries and practicing the tools of conscious communication can be transformative. In some cases, ending a relationship may be necessary.

You can believe the diagnosis, not the prognosis.

By creating an artificial environment, we're not stimulating our immune system enough. Germs are immune-stimulants. They challenge you to be prepared.