If you find that somebody is not grateful for all that you have done for him, then do not get disappointed because often you will find that someone else feels under your obligation though you have done nothing for him and thus your good deeds will be compensated, and Allah will reward you for your goodness.
Ali ibn Abi TalibThe relation of patience to iman is like the relation of the head to the body. If the head is chopped off, the body becomes useless. Then he raised his voice and said: Certainly, the one who has no patience has no iman, and patience is like a riding-beast that nevers gets tired
Ali ibn Abi TalibWhoever desires Paradise, proceeds towards goodness; whoever fears Hell, refrains from the impulses of passions; whoever believes firmly in death, detests wordly life; and whoever recognises the worldly life, the trials and tribulations (of life) become slight for him.
Ali ibn Abi Talib