[via Atanu] Julie Mogenstern gives some tips:
Shorten your workday. If 10 hours isnt enough, try nine-and-a-half. Losing 30 minutes of work time each day makes you organize your time better. No longer will you tolerate interruptions… make personal phone calls from the office… or chat around the water cooler. Your pace will pick up, your focus will sharpen, and youll soon find that youre getting more done despite the shorter workday.
Dont look at E-mail first thing. Instead, use the morning to focus on your most important tasks. Most peoples minds are sharpest in the morning, and completing important responsibilities before lunch creates a sense of relief and accomplishment that can carry you through the afternoon.