Find yourself constantly derailed by social networks and email while writing? The nifty SelfControl app will shut you out of Facebook, Twitter, and email, but allows you to use the Internet for research and writing.
Here’s how it works: “Is email a distraction? SelfControl is an OS X application which blocks access to incoming and/or outgoing mail servers and websites for a predetermined period of time. For example, you could block access to your email, facebook, and twitter for 90 minutes, but still have access to the rest of the web. Once started, it can not be undone by the application, by deleting the application, or by restarting the computer – you must wait for the timer to run out.”
If you need a simpler solution, try The Mike Tyson Method.