Above all, you've got to be kind--don't forget the human costs of your software and how it'll be used. If you need to work on stuff that might not help people,

Above all, you've got to be kind--don't forget the human costs of your software and how it'll be used. If you need to work on stuff that might not help people, make sure you understand who it won't help and to what degree. The only thing worse than callousness is ignorance. That said: I'd suggest against falling into the privilege trap, of considering your position as somehow immoral or unethical or unnatural or something to be shunned. Don't pick up problems that don't interest you because you think they're for "the common good". Don't sideline projects you are passionate about because you feel like you owe it to some other less-privileged group.