When you're going to talk about the personal level—what is the difference between happiness and suffering, personally, in any moment—so much of that is a matter of this difference between being lost in thought and not. And until you learn how to meditate, until you learn how to actually pay attention to the flow of your own thoughts, that's not even a difference you can notice; you are just going to, by default, be lost in thought. You're going to be thinking without knowing that you're thinking.