Your attitude towards problems, difficulties, and adversities is the most important factor in overcoming them.
No man achieves great success who is unwilling to make personal sacrifices.
The best compensation for doing things is the ability to do more.
Whatever your mind can conceive, you can achieve.
Successful people make decisions quickly (as soon as all the facts are available) and change them very slowly (if ever). Unsuccessful people make decisions very slowly, and change them often and quickly.
The single most influential force that controls your attitudes, beliefs, capabilities and emotions is repetition - the words you silently use, over and over again, in your internal dialogue with yourself.