[MordinSolus]

If you're on a Mac and are rather addicted to these sorts of websites, SelfControl (funny name) can be used to block sites for however long you want after some tweaking. I use it when I notice myself opening a new tab in the browser and instinctively going for the "r" or "h" keys.

I too notice that when I block these sorts of websites, even though I still have access on my phone, I start reading a lot more and getting more stuff done. Now that I think about it, I should try the 30 day challenge. The most I've gone is 15 days. Peace out!

[_gfrc]

/etc/hosts does the trick for me. I'm also noticing that whenever I am stuck solving a problem I open a new tab, starting to type one of my self-forbidden websites. Blocking it completely helps :)

I've banned social networking / news reading to my phone, so I'm only doing it when I have to wait, e.g. on a train.