It was 6 a.m., and I was lying in bed on my phone, aimlessly scrolling through the most recent Instagram posts. As my finger swiped mindlessly over and over, a sinking sensation developed in my stomach."What am I doing?" I thought, "Didn't I wake up this early to go to the gym?"Yet, here I was. Doing nothing and feeling bad for doing nothing. I went back to sleep.The problem with willpowerYou see - like most people when it comes to building new habits I was trying to find a way to force ...