Just let your voice mail pick up.

Set aside an hour to focus on your most pressing projects and don't answer the phone. Let callers leave a message. If part of your job is to answer the phone, trade off with a co-worker so you can each get some time to work without being interrupted.

Turn off the e-mail alert sound.

Reply to messages just a few times a day. Don't feel you have to switch gears every time you hear that beep.

Get out of the office.

Slip away to a coffee shop, conference room, or even your car to do your important reading. With just one thing to accomplish -- and without disruptions -- you'll get it done more quickly.

When does multitasking make sense? When you're not working, sometimes it's smart to do two things at once.

Talking on your cell phone + walking around the block = calories burned while you chat.

Listening to a CD + exercising = an energy boost and a more enjoyable workout.

Writing a grocery list + clipping coupons = a faster (and cheaper) trip to the market.