Remember as a kid when you would touch a battery with your tongue? That's the taste.
Not an expert here, just an opinion. I think he means that, facing a situation you can't control, you can only control yourself. Let's say a girl you like rejected you or whatever(pain). Sure that sucks, but hey that's life so just move on. Can't make her like you but you can change your point of view. Is it really such a big deal? (Revocation of pain).
Life sometimes sucks, get over it. Just an example that came to mind.
In the end, it's about some sort of acceptance of the things you can't control, and the power to change what you can, within yourself.
Take all this with a grain of salt. I skimmed through Meditations and I'm not a real stoicist.
Prob 3, and making a big ass semi truck out of Lego duplo blocks from my own mind. Thing would fall over because of weight. It had a driver and passenger.