What’s a fact you feel is common sense, but most people don’t know?

A fact that I think is common sense, but a lot of people don’t seem to understand is that you get what you put in. It’s like when you’re baking a cake: if you don’t add enough sugar, or the right ingredients, your cake won’t turn out the way it should. The same goes for life – if you don’t put in the effort and dedication, you won’t get the results that you want.