During the financial crisis, I worked with hundreds of executives who struggled as a result of their thoughts about job security. When their beliefs changed, so did their emotional experience - and they were then able to focus on the task at hand more effectively.

The hero is valorous because he stands up to every threat directed against his values. Heroism requires value conflict.

Stress is the negative whirlwind of emotions that gets imposed on top of our stimulation and engagement.

Negative thoughts stick around because we believe them, not because we want them or choose them.

We all enjoy pushing ourselves to accomplish our objectives. But we don't need stress to get there.

The more you worry, the more you throw off the delicate balance of hormones required for health.

When a friend is sick, I see the situation for what it is, not what it isn't, and I offer to help as much as she wants, not as much as I want.