A browser extension to add a bit of friction to bad browsing habits.
If you often find yourself unthinkingly checking the same sites over and over and seem to waste a lot of time there, this browser extension may help a bit.
Blacklist sites that you want to discourage for yourself, and the extension will "lock" those sites for you. However, the point is not to shut you off entirely, but just to discourage it a bit by adding a small (configurable) delay before you can unlock the sites. Once unlocked, the sites will be available for a (configurable) time, after which you will have to unlock them again.