One of the more useful productivity hints I have for you today is a 'combo' of 2 free utilities.
Pomodoro and Isolator.

The Pomodoro technique is one for 'Getting Things Done' in your work life. Achieving more with the time your have available.

So what is the Pomodoro technique and how can it benefit an entrepreneur? The technique is basically a time you set aside and focus on doing something. All of the distractions, and when we are talking about working on a computer we mean Twitter, iChat, Facebook, IM etc… disappear, we totally ignore the phone and email and we get down to some serious work. A Pomodoro is a period of time that you set aside and you work, work and then do some more work. You then take a short break, 5 minutes by default and if you want you start another, and another and another. How do you do it? Well there’s an app for that. The Mac app is here. http://pomodoro.ugolandini.com You set it for a time period and get writing. Now it is absolutely amazing what you can do in the standard 25 minutes afforded by the Pomodoro. I have got so far with this as to have finished four articles that I will then let cook over the next day before doing the editing and getting them onto the blogs.

link: Is It A Bird? Is It A Plane? No It's A Pomodoro | Entrepreneur Solo

So you've now got the technique to move you into small blocks of easy-to-do action. Now we have to get rid of all those distractions to keep you on course and that's exactly where Isolator comes in.

Isolator is a small menu bar application that helps you concentrate. When you're working on a document, and don't want to be distracted, turn on Isolator. It will cover up your desktop and all the icons on it, as well as the windows of all your other applications, so you can concentrate on the task in hand.

So there you have it - Pomodoro/Isolator for supercharging your daily time management stuff and it is totally free on the Mac.

Let me know what you think in the comments too.