My router at home blocks Reddit and HN except from 5-7pm and 11:45-midnight (and all day Saturday). Worked amazingly well to cut back the addiction. Now if I could just get HTTPS blocking to work on FB and Twitter.
I don't know why but I find myself opening new tabs without thinking about it. On Facebook? Ctrl+T, fa, down arrow, enter. Why? Who knows, I was already there... That's when I noticed that I have some major problems.