well first off, you'd think that after staying human after turning would not only be a handy weapon for you and fellow survivors, but if stories of your half/undead deeds reaches DC, you'll have more than just fans looking for you.
But if DC is kaput, Just enjoy life you would normally just with a few differences, like you can't feel pain anymore, and you can munch on the living (those who are being dicks, womanizers, etc. etc. etc.) with out the gag reaction. and other good things, just, avoid the nasty human reaction of the instant head shot, when you scare the hell out of them when they see you first thing they wake up.
I would try to protect the living, except the scum-of-the-earth types who aren't worth protecting, from "behind enemy lines". I would also try to find other zombies like me and form an elite team of zombie-fighting zombies, and maybe try to get some of the living to join, if I could convince them not to kill me. It would also be awesome if being a sentient zombie allowed you to control other zombies (zombie army + not getting eaten by them = EPIC AWESOMENESS).