Not if you've been taught that everything is a zero-sum game, which apparently many people believe, especially in the States. If you believe that one person gaining something necessarily means that someone else loses something to an equal or greater degree, caring about other people inherently means having to compromise on your own happiness.

Of course it becomes a lot easier if you believe that it's possible to win together and that giving a little can make a huge difference in someone's day.

Only if you're not a sociopath whose wants to directly against the well-being of others