I contend that the reason why America is not as happy as it was in 1950 or 1920 or whenever, 100 years ago, is because our priorities are wrong, but it has nothing to do with exploiting the planet and has everything to do with losing faith in God.
Try to acquire the weird practice of savoring your mistakes, delighting in uncovering the strange quirks that led you astray. Then, when you have sucked out all the goodness to be gained from having made them, you can cheerfully forget them and go on to the next big opportunity.