The youth who leave their homes, and are no longer under the watchcare of their parents, are to a large extent left to choose their own associates. They should remember that the eye of their Heavenly Father is upon them, and that He sees their every necessity, their every temptation. There are always to be found in schools some youth who, by their course of action, reveal that their minds are cast in an inferior mold. Through unwise training in childhood, they have developed one-sided characters; and as they have advanced in years these defects have remained to mar their experience. By precept and example, these souls lead astray those who are weak in moral power. MYP 164.2
Time is golden, dear youth. You must not imperil your souls by sowing wild oats. You cannot afford to be careless in regard to the companions you choose. Dwell upon that which is noble in the characters of others, and these traits will become to you a moral power in resisting the evil and choosing the good. Set your mark high. Your parents and teachers, who love and fear God, may follow you with their prayers day and night, they may entreat and warn you; but all this will be in vain if you choose reckless associates. If you see no real danger, and think you can do right as well as wrong, just as you choose, you will not discern that the leaven of wickedness is insidiously tainting and corrupting your mind. MYP 164.3