6 Simple Changes That Will Make Your Brain Work Better Spend some time taking care of your brain. You'll be amazed at the results! That 3 lb. organ between our ears controls everything we do. We depend on it for literally everything from deciding which TV shows to watch to keeping us breathing. Yet most of us spend more time and energy trying to look good than giving care to our brains. Taking good care of your brain may the single most powerful thing you can do if you want a healthy, happy, and productive life. Like every organ in the body, you can create optimum conditions for your brain to work at its best. Which could lead to one of the most creative, successful, and life-changing things you do. 1. Get enough sleep. There's plenty of evidence that not getting enough sleep impairs brain function. Keep that up for enough years and you can actually change your brain's DNA to make you more vulnerable to depression. Even in the short term, t