I made a policy that aimless dicking around on the internet is not allowed between the time I leave my flat and finishing work. Finding answers to questions, adding Anki cards, finding worksheets to print off are fine, reading HN, LW, or news sites is not. I now spend a lot of time on Anki, email and Kindle. It works because it's very easy and clear what's allowed and when.
This is the public group instrumental rationality diary for September 16-30.
Thanks to cata for starting the Group Rationality Diary posts, and to commenters for participating!
Immediate past diary: September 1-15
Rationality Diaries archive