[khorwitz]

There's also a Chrome extension for Focusr: https://chrome.google.com/webstore/detail/focusr/fgdcnfgmneb...

This is especially useful because it prevents downward spirals from happening before they begin. For example, if you want to work on X, you can write "Do X" in this extension. Then, when you open a new tab to do something non-productive (like browsing reddit, etc), you'll see a huge reminder of "Do X" to prevent goofing off before it even happens.