A good deed, "said the prophet Mohammed, "is one that brings a smile of joy to the face of another." Why will doing a good deed every day produce such astounding efforts on the doer? Because trying to please others will cause us to stop thinking of ourselves: the very thing that produces worry and fear and melancholia.

George Bernard Shaw was right. He summed it all up when he said: "The secret of being miserable is to have the leisure to bother about whether you are happy or not." So don't bother to think about it! Spit on your hands and get busy. Your blood will start circulating; your mind will start ticking-and pretty soon this whole positive upsurge of life in your body will drive worry from your mind. Get busy. Keep busy. It's the cheapest kind of medicine there is on this earth-and one of the best.

The successful man will profit from his mistakes and try again in a different way.

Knowledge isn’t power until it is applied.

There are always three speeches, for every one you actually gave. The one you practiced, the one you gave, and the one you wish you gave.

We can't win friends with a scowling face and an upbraiding voice.

If we speak poorly about that which we do well... people will assume we perform poorly!