Your financial success is directly related to the size of the problem you solve for other people (solve BIG problems and you'll make BIG money).
Brian TracyIncorrect assumptions lie at the root of every failure. Have the courage to test your assumptions.
Brian TracyYou can accomplish virtually any goal you set for yourself, as long as the goal is clear and you persist long enough.
Brian TracySingle-minded concentration in the direction of your dreams intensifies your desires and increases your self-confidence.
Brian Tracy