Can a Night Owl transform into an Early Bird?

Have any of you out there made this transformation? I'm not sure I'll be able to do it, I just can't give up my late nights yet, but somehow I've still been getting up early now and then to fit in morning workouts. I have to say I prefer morning workouts since I get the exercise out of the way. Many mornings of 6am bike rides with friend Ashley and riding to work at 7am with colleague Bjorn are conditioning me to get up and go. Nothing like the motivation of knowing that a friend will be left standing out in the early morning chill waiting for you if you don't rise and shine that one morning. This Thursday morning I have an 8am work conference call with some European colleagues to discuss a multi-million dollar deal (the source of a tad bit of stress) that I've been working on since January. I'm hoping to get out by 5:30am for a ride to make sure I get back in time for my call which I'll take from home. It's now 1:30am...hmmm...best I get to sleep then, eh?