GP's kid had to get up to go to day care, he didn't get a vote, and would have had to get up regardless of the alarm clock his dad uses.
What's driving me crazy is all these guys getting their kids to bed by 7:00 or even 8:30. Oh, how I would love to have my kids in bed by those times. Of course, my kids sleep till 9:00AM, but by then, I've been up and gone for 4 hours, so don't get to enjoy a quiet house at either end of the day.
But seriously: it really does work. It's hard for the first 2 nights or so but gets exponentially better as time goes on.
Kids will sleep to whatever schedule you set if you decide on a routine and stick to it. Some will take more work than others, but success is possible for nearly everyone.
It's indeed just routine, routine, routine, ...
As brc says, it's routine, routine, routine. I'll definitely get my coworker's advice by the time I have children !! :) .