Don't watch the clock; Do what it does. Keep going.

Sam Levenson

Optimism is the one quality more associated with success and happiness than any other.

Brian Tracy

Do the difficult things while they are easy and do the great things while they are small. A journey of a thousand miles must begin with a single step.

Lao Tzu

Our fear of messing up should give way to the only real danger there is, that of never trying.

Alain de Botton

Concentrate all your thoughts upon the work at hand. The sun's rays do not burn until brought to a focus.

Alexander Graham Bell

The best excuse is to have none.

Ivan Panin