The best way to improve mental performance, is to improve physical performance

By using money as the scapegoat and work as our all-consuming routine, we are able to conveniently disallow ourselves to do otherwise: 'John, I'd love to talk about the gaping void I feel in my life, the hopelessness that hits me like a punch in the eye every time I start my computer in the morning, but I have so much work to do! I've got at least three hours of unimportant email to reply to before calling prospects who said 'no' yesterday. Gotta run!

A goal without real consequences is wishful thinking. Good follow-through doesn't depend on the right intentions. It depends on the right incentives.

But you are the average of the five people you associate with most, so do not underestimate the effects of your pessimistic, unambitious, or disorganized friends. If someone isn't making you stronger, they're making you weaker.

Slow down and remember this: Most things make no difference.

You don't have to travel, but I find extended travel to be a helpful tool for reexamining yourself and the constraints you've artificially placed on your life. It's easy to believe everything has to be done one way if you're always in one place around the same people.

Excitement is the more practical synonym for happiness, and it is precisely what you should strive to chase. It is the cure-all.