I usually let the city governor manage the citizens, if the governor is like the AI then I should probably turn it off. Should the governor just be turned off?
Yes.

(Don't you love it when questions answer themselves?)
[edit]
Ok. This deserves maybe a little explanation.
To get your learning curve going, you should first understand how to keep your citizens happy. Letting a governor do it, is allowing clowns in your cities.
The governor (AI) does a perfect job of keeping people happy. Absolutely flawless. The thing is, although it's highly effective, it's not efficient - there are better ways to do it. If you take away a tile (or the governor/AI does it), you're telling one citizen to stop working the tile and to parade around town to entertain people, hence the clown in your city screen.
That makes people happy for some reason. It also terrifies people who have Coulrophobia, but that's another story.
The Clown, though, is not producing anything (the tile is not worked, he was squeaking his own nose in front of kids faces, remember) and also not raking in commerce. And you are not getting food from that tile, slowing down process. This clown is practically costing you money and letting the kid die of famine. Oh and that marketplace? It will take forever.
So, when people are protesting in the streets of your cities, don't hire the clown squad. You better build a temple or something, get some military police (in some governments) or better yet, move the lux slider, or get luxury recourses. The slider is in effect moving money to the people to keep them happy. This money now does not go into your cash or into science.
But this is better because handing money to the people still lets them work the tiles, raking in shields for production, commerce for money/science and food. See, better than hiring clowns.
Clowns = source of all evil.
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