For some reason I experience a lot of guilt so I am always trying to figure out how to alleviate at least some of it. Today I remembered a saying from the mishna in Pirkei Avot, 2:19 (a Jewish source). In Hebrew it goes:
It is not up to you to complete the work, but neither are you free to desist from it.
I cannot do everything but that is fine because it isn’t my responsibility to do everything.