When my kids were little, I took them to visit a special museum exhibition on ancient Egypt. We learned was that Egyptians believed that only those, who have a heart that weighs no more than a feather, can enter heaven. That means this is what those people strove for, lightheartedness. To have a light heart means one looks on the bright side, laughs easily, forgives others, behaves with integrity, and atones for mistakes.
I have long said that heaven and hell are right here on earth; they are our choices for what we make of our lives. Now I combine this with what the ancient Egyptians believed, and the result is that those, whose hearts weigh no more than a feather–because they look on the bright side, laugh easily, forgive others, behave with integrity, and atone for mistakes–can live in heaven right here on earth.