Thoughts are chemical. They can either kill us or cure us.

I grew up caring about people and I would say again, that's what made me who I am. I became a doctor for what I like to call "healthy reasons." Not because I'm fascinated by the human body or want to understand death, but I like people and I want to help them. That also became my problem, because I couldn't help everyone, I couldn't fix everyone.

Do things to make your day precious.

The inexplicable happens all the time. It makes more sense to simply accept things we observe but cannot understand. It is really more scientific to keep an open mind. Until we can understand and explain the things we now label miracles, let us accept them and try to create more of them.

Every time I jog through the world, I am awed by what I find. On a winter morning, when it seems too cold and slippery for safe jogging or bicycling, I can still go out and experience the glory of sunlight turning icy branches into strings of sparkling diamonds.

What a shame to be so afraid of failure that you stop living. My wife has a great one-liner about failure: "Never consider yourself a failure-you can always serve as a bad example." She is right. Failure can be a better teacher than success.

If nothing has helped you decide, go ask a child. Children know what they need, and more surprisingly, the know what we need. Adults think. Kids respond with their feelings. They don't think about what you will think of their answer, so they just speak the truth-if you can get to them before junior high school age. At that time, they grow up, stop feeling loved, become depressed and start thinking-and what they are thinking about worries me.