Cooking is great. But for most families, it's not realistic to cook everything, at every meal, from scratch.
When you buy processed foods, check the Nutrition Facts label and choose those that are lower in sugar, saturated fat, and sodium, meaning a single serving makes up 5% or less of the daily limit for these ingredients.
Foods are high in sugar, salt, and saturated fat if a serving has 20% or more of each one.