Overview
Pick the toughest, loftiest goal in your life and spend all the time you can chipping away at it. You have a lot of endurance in your favor right now, so if you take things slow and steady, you could make some amazing progress. Be aggressive -- sweat equity will always pay off. Physical exercise could help clear your mind as well, so try to move around more and investigate some new activities that might serve a dual purpose. Karate or dance lessons, perhaps?
