Re: What couldn't you give up
Definitely the TV.
I have given up all the other stuff for a month at least, from time to time, and managed to do so very well, but I would be hard pushed to give up the TV, even for a couple of days!
Having said that, in the days of power cuts, when I was forced to not watch any TV, after the first couple of days of torment it got a lot easier, and I found I got a lot more stuff done, read more, and rediscovered simple pleasures like board games and cards.
Also rediscovered the joys of radio, using a portable radio, natch!