Positive, optimistic sales people sell more than pessimistic sales people.

There are physical characteristics which are inherited. These include things like good looks, high intelligence, physical coordination. These attributes contribute to success in life, and success in life is a determinant of optimism.

Reaching beyond where you are is really important.

When it comes to our health, there are essentially four things under our control: the decision not to smoke, a commitment to exercise, the quality of our diet, and our level of optimism. And optimism is at least as beneficial as the others.

Some find that very optimistic people have benign illusions about themselves. These people may think they have more control, or more skill, than they actually do. Others have found that optimistic people have a good handle on reality. The jury is still out.

The pleasant life: a life that successfully pursues the positive emotions about the present, past, and future.

When well-being comes from engaging our strengths and virtues, our lives are imbued with authenticity.