This has probably been discussed on HN previously, but to me the most interesting idea here is the meta-issue of Zuck's personal challenges. I think it's a won

This has probably been discussed on HN previously, but to me the most interesting idea here is the meta-issue of Zuck's personal challenges. I think it's a wonderful practice and while I'm sure most of us take on these kinds of challenges from time to time, but he seems to take an admirable zeal to it. For example, I've taken on various learning-a-language (natural and otherwise) challenges, but I've never gone so far as to commit to practicing an hour a day, every day, for an entire year. Now, Mark only says he 'blocked out' the time, but if he actually follows through then it's very impressive.