Wishingful Thinking gives us 10 Ways the Workplace Crushes Creativity.

One study found that office distractions eat an average 2.1 hours a day. Another study, published in October 2005, found that employees spent an average of 11 minutes on a project before being distracted. After an interruption it takes them 25 minutes to return to the original task, if they do at all. People switch activities every three minutes, either making a call, speaking with someone in their cubicle, or working on a document.

Distractions are not just frustrating; they can be exhausting. By the time you get back to where you were, your ability to stay focused goes down even further as you have even less glucose available now. Change focus ten times an hour (one study showed people in offices did so as much as 20 times an hour), and your productive thinking time is only a fraction of what’s possible.

When I read this, my immediate thought was all the external distractions I get (managers, clients), but there’s just as many, if not more, self-imposed distractions to get rid of.
Checking Facebook, checking RSS feeds, checking Twitter, seeing if anyone new and cool is on Google Plus, responding to instant messages – these are all potential distractions (not everyone finds them irresistible to check) we have the ability to remove.