This may be 2 years old, but it's still as valuable as ever. Stever ("No, That's Not a Typo") Robbins writes at Working Knowledge for Business Leaders on the Harvard Business School Website:
Working smart means getting the same results in less time. To do that, you must change how you work. You'll get the most by changing your speed, increasing focus, and organizing to do things in parallel.
Many scientists learn this when they're faced with the prospect of adding teaching and service to their research obligations -- or starting a family -- after starting their first faculty jobs. And because women (on average) spend more time on home-related obligations -- who was it that said that every prof, male or female, needs a wife at home? -- this message is especially valuable for women.