Mostly self control. It only takes me about 15 minutes to go through all the actual news sources I follow. HN doesn't come out of the 15 minute budget, since it

Mostly self control. It only takes me about 15 minutes to go through all the actual news sources I follow. HN doesn't come out of the 15 minute budget, since its all technical focused not-exactly-news; it has its own budget of sorts.