Worry is simply thinking the same thing over and over again and not doing anything about it.
Luck is a residue of design.
First of all, a man, whether seeking achievement on the athletic field or in business, must want to win. He must feel that the thing he is doing is worthwhile; so worthwhile that he is willing to pay the price of success to attain distinction.
Thinking about the devil is worse than seeing the devil.
Success is that place in the road where preparation meets opportunity.
Luck is the residue of opportunity and design.