How does one learn how to stop feeling guilty about the inevitable fact that one's existence hurts others?

Resources that I’ve taken could have been used to help other people. Thus I have indirectly hurt the people who didn’t get resources.

Every time I am sick, my parents are sick – with worry. I’ve been sick enough that I feel that their worry has been significant enough to do long-term damage.

I hate to think about it much deeper than that, but I can’t help it sometimes. Everybody’s existence harms other people, doesn’t it? How does one let go of the guilt from that? Should I just try not to think about it? Focus on doing what I can to make the world a better place?

And I just want to add a disclaimer that I am in no way suicidal.