You’d like to think you’re pretty rational, right? That you’re in control of your future, isn’t that correct? Well you are, and you aren’t. There’s a reason so much of what feels really good—dating the wrong guy, sleeping with someone—are also things we know we shouldn’t do. Our genes are only concerned with one thing: being perpetuated. That’s where the, “Do it” voice comes into play. But, the fact that you can recognize why something that feels good is in fact not good for you—that is what makes you a logical creature. So don’t worry, you’re not totally a mass of uncontrollable hormones and chemicals. But in order to control them, you have to know about them.