Things I still haven't learned, part 1: sleep > reading. When you've slept very badly the night before, and you can use the 45 minutes of the train trip to sleep a little before really starting the day, "meh, I'll read just five minutes, until the next stop" is a very, very dangerous thing to think. Next thing you know, the train will be pulling into the station you need to get off the train at and you will still be reading, reluctant to put the book down for such a silly thing as getting off the train. You will put off closing the book and putting it back in your bag until the last minute, and be very glad the station you get off the train at is the last stop, else you would've certainly missed your stop.