Ditto food: "successful" eating requires putting sensible things in your mouth. You can give someone a no-limit spending card to Whole Foods, you can teach them everything about nutritious eating, and some will just eat nigh unto garbage anyway.
Ha, ha..I remember when I went back to college twenty years ago talking to some of my college profs. a number who weren’t much older than me (early forties). A few of them confided in me about how disgusted they were with some of their (mostly young) students who would hand in shoddy term papers that had little or no corrective work done to them despite having computers, spell-check, and all the other new gizmos available to them. After typing term papers with an old manual typewriter, I was stunned how easy it was with computers or the Brothers word processor I used.