It's all about being busy enough that at least some of the day flies by. It doesn't have to be interesting, and you don't even have to like it.. You just have to have to do it. Money is a good motivator, but you'd be surprised how many nigs still can't find motivation. You need deadlines and immediate consequences like embarrassment. It helps to see someone else get the hammer put on em for fukking up.
And, like a few people in here already said, you do get used to it. It takes a long time, but eventually you kind of "give up" and learn to live a full life around your office job.