I have that tendency as well. Left to my own devices I would probably never see the light of day, haha.
It's possible to reverse but it is difficult to get used to. However it feels worth it as long as you make good use of your day.
It's also possible to do both, but difficult. When I still had my fire job, working 48 hours on and then having 96 hours of straight off time (that's FOUR WHOLE DAYS, for those who are bad at math, basically a miniature vacation every time I got off work, **** I miss that), I'd spend at least two of them awake all night and sleeping all day. But it was a bitch to flip back around sometimes and be ready for work the day after.