Less vs. Fewer

Let’s be honest. We live in a world where more is better. We’re a gluttonous species that can never have enough shit. We need money, more possessions, more followers, more likes, and more carbs. You name it, we want it—and we want it all. So, it’s not surprising that we’ve forgotten how to even talk about the concept of not having as much as possible. So, when do you use “less” versus “fewer?”