I know one of the things I've been told is to keep a journal so that you can record your plays, observations, money management stuff, and other notes. Does anyone actually do this and how meticulous are you with a journal? Do you do it online (i.e. word) or with a real journal? Do you review it daily? Yearly? Does it actually help long term? Just curious...b/c I've been thinking about doing it but am wondering if the costs (i.e. a lot of time spent with it) outweight the rewards (i.e. learning).