Here is a good article on some gospel related tips to keep life going when it gets hard.
Much of life does not change, but let me testify to you that one area of life is good and will never change—that’s when we live the principles of the gospel of Jesus Christ…Your futures depend on the present. Live life well today. Life passes quickly. Let us not be guilty of hoping that someday we will become happy and contented, after college or after this next semester or after this next test or after this date tonight or after the bills are paid or after the kids are grown or when we are retired. The good will always outweigh the bad—let me say that again: The good will always outweigh the bad. There are far more lovely, fine, honest people in this world than those who are dishonest and injurious. May you learn at your age—and we at ours if we haven’t—to recognize the good and to bring joy into the lives of others. May the Lord’s choicest blessings be with each of us that we may do all within our power to do those things that are proper and right in our social interaction with each other as we date, that we may have, when that special sacred time comes, strong marriages and lives filled with joy.
-Hugh W. Pinnock, member of the First Quorum of the Seventy, 1981. (LINK)