Rule that you should know
Tikunot and Hadrachot, Ch. 31
This is a rule that you should know, my son, the Holy One Blessed Be He does not test a person beyond his powers and his ability to withstand the trial, because the Holy One Blessed Be He does not needlessly cause his creations to suffer. On the contrary, the Holy One Blessed Be He only tests a man to his benefit, to elevate him, and to bring him praise, and to rectify his soul. For a person is brought into this world precisely to undergo trials. Holiness is not awarded to a person from Heaven as a gift without the withstanding of trials. And when a person knows and believes that Holy One Blessed Be He is with him during all of his trials, then this faith strengthens his mental and physical powers, and all evil forces are scattered before him.