We aren't separate from the Universe but a part of it;
if we do Good, that Good will go out & reach another part of the Universe, making the whole Universe better;
it's not about being Good hoping to have Good things happen, but realizing doing Good for the sake of Good is what makes all Life Good & that setting an example creates others who do the same until eventually (ideally) the whole Universe selflessly helps everyone, 'cause everyone sees helping others as helping just another part of their self.