Live neither in the past nor in the future, but let each day absorb all your interest, energy and enthusiasm. The best preparation for tomorrow is to live today superbly well.
Shut out all of your past except that which will help you weather your tomorrows.
Throw away all ambition beyond that of doing the day's work well. The travelers on the road to success live in the present, heedless of taking thought for the morrow. Live neither in the past nor in the future, but let each day's work absorb your entire energies, and satisfy your wildest ambition.