The good things that humans do are the best feelings any human can experience, the feeling is amazing, see joy on someone's face when you compliment them, help them, bless them, smile at them give you this joy and nothing just a giddy feeling, those feelings last forever in your mind, when those moments are in the present the feeling is like a sneak peek of how heaven is 24/7, a encouragement to keep you doing good things.
Good things feel so good to experience because God gives you a sneak peek of heaven.