By criticizing, we do not make lasting changes and often incur resentment.

Always avoid the acute angle.

Are you bored with life? Then throw yourself into some work you believe in with all your heart, live for it, die for it, and you will find happiness that you had thought could never be yours.

We can all endure disaster and tragedy, and triumph over them-if we have to. We may not think we can, but we have surprisingly strong inner resources that will see us through if we will only make use of them. We are stronger than we think.

I've found that worry and irritation vanish into thin air the moment I open my mind to the many blessings I possess.

Five hundred years before Christ was born, the Greek philosopher Heraclitus told his students that "everything changes except the law of change". He said: "You cannot step in the same river twice." The river changes every second; and so does the man who stepped in it. Life is a ceaseless change. The only certainty is today. Why mar the beauty of living today by trying to solve the problems of a future that is shrouded in ceaseless change and uncertainty-a future that no one can possibly foretell?

Our fatigue is often caused not by work, but by worry, frustration and resentment.