I should have called more often. If you live with this reality, you will not fight with your parents anymore. You will not hold a grudge against your brother. If you had a terminal illness, you will even treat a stranger differently. You won't waste your time arguing with someone who cut in line.
Life is too precious to be petty.
Be motivated by the fear of losing what is precious. Imagine losing your eyesight. Walk around with a blindfold for an hour. FEAR OF GOD One of the primary obligations in Judaism is to fear God. We fulfill this Mitzvah by paying attention to reality and seeing the consequences of our actions.