It is important that we do not let negative thinking destroy our progression and happiness. The Savior told Joseph Smith and Oliver Cowdery to look to him in every thought and to doubt not and to fear not (D&C 6:36-37). Doubt and fear are destructive to us. The Lord commanded us to be of good cheer as he has already overcome the world. By making the Savior and his atonement the center of our lives and thoughts we can continue to move forward in life with a positive attitude.
I love the following quote from President Howard W. Hunter:
As a being of power, intelligence, and the master of his own thoughts, a man holds the key to every situation, to make his life what he chooses it to be. When he discovers the divine power within his soul, he can lead his life to a God-like nature. If one dreams lofty dreams, so shall he become. There is magic in the way one thinks. If we expect the worst, we will get the worst. If we expect the best, we will receive the best. If we train our minds to have faith in God and ourselves, we are using one of the great laws of life. If we think and live righteously, happiness will find its place in our lives. It is amazing when we expect the best how forces are set in motion which cause the best to materialize. (83-02)
Our thoughts more than circumstances determine the course of our lives. Outward circumstances do not determine the course of our lives as much as the thoughts that habitually occupy our minds. These thoughts carve their impression on our faces, in our hearts, and on the tablet of our eternal souls. (83-02)
(Howard W. Hunter, The Teachings of Howard W. Hunter, edited by Clyde J. Williams, p.74,80)
Carol and I want you to know how much we love you and appreciated your friendship. It means a lot to us. Our desire is to be a positive influence however we can.