My most productive hours are from 10pm till midnight, at home.
Everybody else is sleeping, nobody calls, no colleague can bother me.
I listen to a CD I've listen to a few hundred times, and I work in a very focused manner on important new features or bugfixes.
Before going to bed, I send a short email to my boss describing what I did.
After about a week, we have our usual meeting, during which colleagues say "we should do this and this, it'll probably take a month or two", with the hope that they won't be the ones having to do it. I just tell them "No problem, I did it yesterday night". Everybody's happy.
I tell my boss I'd like to take my day off, and go skateboarding.
So for me, it began by working the usual 9 to 5, adding some very productive overtime, and showing my colleagues and boss that I don't actually need the 9 to 5.