Despite the (basically) inherent tendency in humans towards hedonism, life isn’t just about catering exclusively to one’s self-interests: At least it shouldn’t be. Next time you spot a broken-down motorist, pull over and volunteer to help (assuming that you feel safe doing so!). Offer to pay someone else’s bill that he/she can’t quite cover—e.g. they might, for instance, lack enough money to pay for a meal, or can’t quite make this month’s rent payment, or need emergency supplies during a power-outage. Countless other situations apply, too.