The only certain means of success is to render more and better service than is expected of you, no matter what the task may be. This is a habit followed by all successful people since the beginning of time. Therefore I saith the surest way to doom yourself to mediocrity is to perform only the work for which you are paid.
Og MandinoObstacles are necessary for success because in selling, as in all careers of importance, victory comes only after many struggles and countless defeats. Yet each struggle, each defeat, sharpens your skills and strengths, your courage and your endurance, your ability and your confidence and thus each obstacle is a comrade-in-arms forcing you to become better... or quit. Each rebuff is an opportunity to move forward; turn away from them, avoid them, and you throw away your future.
Og MandinoFor the rest of my life there are two days that will never again trouble me. The first day is yesterday with all its blunders and tears, follies and defeats. Yesterday has passed away, beyond my control forever. The other day is tomorrow with all its pitfalls and threats, its dangers and mystery. Until the sun rises again I have no stake in tomorrow, for it is still unborn.
Og Mandino