I always cringe when I see a well-meaning grandma, or anyone for that matter, say to a little child: “What a good girl you are! Here’s a cookie!” Most of us, early on, learned to see sweet foods like ...

Rewarding yourself can backfire. If you tell yourself, “I’ll only listen to my favorite podcast while I’m at the gym,” it takes just one moment of weakness to realize you can cheat and listen to it ...