Just like I used to do whatever Sim-City-like game I used to play, I’d works towards a more perfect, happy society. That would necessitate the removal, or ‘adjustment’ of, some of the more sociopathic people. And according to the premise here, yes, I would be the person to decide who they are, and what that entails. Yay!
I think I’d smite some bastards outright, in a spectacular fashion: Hit by lightning, space junk, etc, particularly while they’re on TV. These would be dictators and certain people with political/monetary power. For others, I’d give them little shocks when they think of doing bad things to people, increasing in severity with frequency and severity - or maybe I’d just hit them with a permanent, industrial-sized dose of empathy. I’d broadcast the thoughts of people who lie to gain power or money to everyone in the vicinity, and this would work over TV, video, or film (couldn’t be removed in post-production. Hey, I’m a god!) Acting in a move/TV show/plays wouldn’t count. Intent counts here.
Maybe I’d appear to religious people in their dreams, as their deity of choice, and tell them there’s an afterlife, and to hold the well-being of others as their guiding principle, or they won’t get in the good section. They should both teach others to fish, and feed them until they learn, or something to that effect, so that they don’t get confused and think all tough-love, all the time is a suitable response. I’d also tell them that, while I will be watching, I won’t be taking requests - that people are on their own, so don’t go praying to me, or trusting to me to fix shit. For those religions that don’t have an afterlife, I’d adapt a similar, human-centric message. “Be excellent to each other”, or the like.
I’d probably give everyone a 20-point IQ bump.
Dunno what I’d do on the second day. . .