I used to believe I had to earn my happiness.
Then I realized that I could be happy in “miserable” conditions (as well as vice versa—I could be miserable in “happy” conditions). My happiness wasn’t dependent on sacrificing or justifying my way into a predetermined “heaven” or “enlightenment.”
Happiness, in my opinion, springs from an internal focus on relaxation and allowance, rather than earning and strife. Outwardly, I may or may not have to exert physical effort, but that is independent of my happiness.