What we link to pleasure and what we link to pain determines our destiny.

Self-development is the only thing that keeps a person from burning out. We all have many needs - the need for certainty, the need for variety, the need for significance, and the need for connection. But, ultimately, we must grow, and we must contribute in a meaningful way in order to feel fulfilled.

Be yourself. That's it. I got about 45 [billionaires] . They are all different, all unique, and they are all self-made.

Individuals who succeed have a belief in the power of commitment. If there's a single belief that seems almost inseparable from success, it's that there's no great success without commitment. If you look at successful people in any field, you'll find they're not necessarily the best and the brightest, the fastest and the strongest. You'll find they're the ones with the most commitment.

Only those who have learned the power of sincere and selfless contribution experience life's deepest joy: true fulfillment.

See it as it is, not worse than it is just so you have a reason not to try.

Ten years from now you'll laugh at whatever's stressing you out today. So why not laugh now?