I find it hard to be anything other than myself. I did struggle with how to separate regular-member me from moderator me to begin with, but in the end I tried to stay away from moderating discussions in subforums that I frequented as a member, unless it was of utmost urgency.
My stint as a moderator here is the only one I have had to date, and will be the only one I ever have. I have been a member of quite a few forums in my time, but never one as well-run as GTP, so I figure that if GTP is this good and still I hated moderating it, then I will well and truly detest it elsewhere.
My theory is that Jordan has a long-term plan. Most forums I have seen go through a boom period that the administrators don't know how to deal with. F1 Fanatic is a prime example - it started out as a niche, hobbyist blog, but then Keith quit his job to run it full-time. As the site gained a reputation (he had pictures of the Ferrari F150 Italia hours before anyone else), more and more members started joining, but there was no plan in place to deal with it. As a result, if you stray from the popular opinion (Raikkonen good, Hamilton excellent, Rosberg evil), the community turns on you and you get banned because it's easier to ban you than the trouble-makers. GTP, on the other hand, has gone through several booms with the release of GT4, GT5 and GT6, and hasn't experienced any of those problems because policy isn't being made up on the spot.