I've given up a few things for Lent- I've cut chocolate and most sugary things from my diet- if I feel like having a snack, I'll have something like a carrot instead. I also cut down on my spending, which means an embargo on books and dvds mostly, though I generally try and avoid buying anything that I'm not in dire need of.
It's in my best interests to cut down on spending anyway, given the trip. I'm in a spot of bother with the Kyoto hotel situation- the first hotel I tried to book ended up being full. I've booked with another hotel now. Fingers crossed this one isn't all booked up too!
Lent is necessarily all about giving something up for forty days though. My reading during Lent tends towards spiritual works- this Lent I'm reading Nikos Kazantzakis' Saint Francis. I loved The Last Temptation of Christ, and after hearing that Kazantzakis based Francis on the same model that he did for Jesus (Nietzsche's Übermensch), I decided it would be worth a read too. I might poke at some humanist stuff too- one of the guys I was doing Greek with raved about Erasmus, so I'm thinking I'll put him on the reading list, especially since I've also been reading up on Thomas More a bit lately.
At the moment however, I feel like keeling over. Going to do some hunting for a hotel for my second Tokyo stay, and then I might retire.