It’s very hard to make massive gains in skill and performance and talent, especially overnight. But it is pretty easy to make tiny changes through a strategy termed “aggregate marginal gains.” The “1 percent advantage” works incredibly well for one simple reason: Small improvements add up to a major overall improvement. Ever so slightly streamline your morning routine, the way you handle e-mail, the way you handle voice mail, the way you schedule appointments . . . and soon you can free up thirty minutes of your day so you can (you guessed it) do more of what you do best.