Failure is often the line of least persistence.

If you don't like your situation in life, don't fret or worry--do something about it. Worry less, and act more.

When we change the input into our minds, we change the output into our lives.

Sometimes adversity is what you need to face in order to [grow and] become successful. For that reason it makes sense to be grateful for adversities that help you grow, even if it is only in understanding and compassion for other's suffering.

Speak in such a way that others love to listen to you. Listen in such a way that others love to speak to you.

Fear is the darkroom where negatives are developed.

When I became proficient as a salesman I was invited to teach new hires.