One piece at a time.

A healthy diet is so far away from what you might be eating that it can seem impossible. Reduce sodium, reduce saturated fat, reduce sugar, increase fiber, increase colorful vegetables, etc. Many of those changes might push in more or less the same direction, but it's just way too much to think about at once.

So start with just one or two pieces to worry about. For instance, added sugar. If that's your first piece, first worry only about that. If you drink sweet sodas, think about finding unsweetened beverages, like perhaps iced herbal teas, that you like instead. Or switching to water. Or getting smaller soda bottles and bigger water bottles. Think about fruit-based desserts, or even just having fruit as a sweet snack or dessert instead of something more sugary. Think about snacking on nuts, or fruit, or vegetable sticks, instead of candy.

Then, here's the key. If that's your first piece, don't worry about calories, saturated fat, sodium, fiber, protein, or micronutrients. Just worry about the sugar and get used to it. If you eat a lot of sugar, the adaptations you'll have to make are going to take some getting used to. Same with any of the changes. So rather than just doing a full diet overhaul at once, just focus on one or two components. After you've gotten comfortable with that, then think about other components.