Hard Truth on the Sheer Difficulty of Making an Impacthttp://calnewport.com/blog/2012/03/15/being-very-good-at-anything-involves-being-somewhat-addicted-hard-truth-on-the-sheer-difficulty-of-making-an-impact/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+StudyHacks+%28Study+Hacks%29&utm_content=Google+Feedfetcher by da5e • 14 years ago 2 0 14 years agoCAcalnewport.com