Time is arguably the most precious commodity. Successful people know how to use it wisely. In particular, high achievers, whether CEOs, entrepreneurs, or athletes, are all familiar with the value of time management. However, they work smarter, not just harder. Here are 14 time-management secrets they use to make the most of each day. 1. Record a Time Time LogTo uncover the secrets behind time management, Laura Vanderkam interviewed numerous successful individuals, including productivity expert David Allen. In her conversation with Barking Up the Wrong Tree, she revealed a common theme among th…