And again, verily I say unto you, he hath given a law unto all things, by which they move in their times and their seasons;
And their courses are fixed, even the courses of the heavens and the earth, which comprehend the earth and all the planets.And they give light to each other in their times and in their seasons, in their minutes, in their hours, in their days, in their weeks, in their months, in their years - all these are one year with God, but not with man. - D&C 88: 42-44
"The ingredient that is essential in learning to endure is consistent effort," said Elder Marvin J. Ashton in his October 1984 conference address. "In our race for eternal life, pain and obstacles will confront all of us. We may experience heartaches, sorrow, death, sins, weakness, disasters, physical illness, pain, mental anguish, unjust criticism, loneliness, or rejection. How we handle these challenges determines whether they become stumbling stones or building blocks. To the valiant these challenges make progress and development possible."