"Our motives and thoughts ultimately influence our actions. The testimony of the truthfulness of the restored gospel of Jesus Christ is the most powerful motivating force in our lives. Jesus repeatedly emphasized the power of good thoughts and proper motives: 'Look unto me in every thought; doubt not, fear not' (D&C 6:36). "The testimony of Jesus Christ and the restored gospel will help us in our lives to learn of God's specific plan for us and then to act accordingly. It gives us assurance of the reality, truth, and goodness of God, of the teachings and Atonement of Jesus Christ, and of the divine calling of latter-day prophets. Our testimony motivates us to live righteously, and righteous living will cause our testimony to grow stronger."
~Dieter F. Uchtdorf