If someone asks how I am, should I say I’m good or I’m well?

The answer depends on whether the person who asked really cares how you’re doing. If they’re only asking to be polite, the correct answer is, “Fine, thanks!” But if they really want to know, the correct answer is probably closer to, “To tell you the truth, I’m haunted by existential angst and the creeping suspicion that Soren Kierkegaard was right when he said that our age is putting on a veritable clearance sale not just in commerce but in the world of ideas, too — that everything can be had so dirt cheap that one begins to wonder whether in the end anyone will want to make a bid.”

That wasn’t very helpful.

I tend not to be.