One of the worst habits people have is to hoard junk, and we don't just mean material things, but rather petty resentments and grievances which, by themselves, aren't worth much of anything, but when accumulated over the course of years or decades, are fatal to a relationship. Instead, discard the silly annoyances when they occur, and hoard the positive things your partner does for you. As the Bible says: "whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable--if anything is excellent or praiseworthy--think about such things."