I recently finished this book the other day. Great insight on a lot of things. Constantly throughout the day I try to "check" my ego. Its not the easiest thing to do, but the more practice the better. The days do seem more enjoyable as I start to embrace each moment versus constantly thinking about the future or past.
I didn't realize how much my ego was in control until I started checkin' it! I had to laugh at it after a while. This is a great exercise and it cured my insomnia. The stuff that kept me up at night was absolutely ridiculous, now that I think back on it.