Someone who holds political office should be realistic about what change they can accomplish & put all their might & determination into that.
I don't mean "realistic" as in compromise. I mean being realistic about the type of things that can be accomplished through their office, about which things they should become complete pitbulls who sink their teeth & won't fucking let go.
They shouldn't imagine that the responsibility of saving the world is on their shoulders. That's on ALL OF US.