You've probably heard this advice: "Just think positive and you'll rewire your brain." Well, I tried that. For years. And every time I told myself "you're awesome," my mind fired back. "No you're not." "You'll never stick with it." "This is never going to work." One positive thought I couldn't believe, followed by one hundred negative ones ready to bring me back down. According to neuroscience, the brain really can change. This is called neuroplasticity, and the science on th