Your ability to concentrate single-mindedly on one thing, the most important thing, and stay at it until it is complete, is an essential prerequisite for success.
Brian TracyThe person we believe ourselves to be will always act in a manner consistent with our self-image.
Brian TracyWhen you work towards your goals, you become healthier and healthier, mentally. It is very hard to do with a negative attitude. You just need to become more and more positive. And then you start to succeed. And starting to succeed is like winning a race and having the audience cheer. That makes you feel happy and motivates you to work even harder and achieve even more.
Brian Tracy