In my case I've joined Giving What We Can - a community of people giving at least 10% of their pre-tax income to the most cost-effective charities they can find

In my case I've joined Giving What We Can - a community of people giving at least 10% of their pre-tax income to the most cost-effective charities they can find (see GiveWell.org). Plus I help out with web dev pro-bono to some initiatives that I think are making the world better. It's always easier to be selfish; finding noble reasons to not put in good effort at work is probably easier than recognizing you might be making those around you pick up your slack. If you're "quiet quitting" and have lots of free time at work, you may as well help the people around you (e.g. be a good mentor).