Step one: why are you snacking? Are you bored, or really hungry? Listen to your body — don't deprive yourself if you're hungry, just choose a healthy snack. But also don't snack out of boredom or because you think you have to eat at a certain time. Also make time to focus on your food and the process of eating, as it can be easy to overeat (and oversnack) while you're doing other things, like working, watching TV, or even driving.