Yeah, you're right.
Aristotle would not calm people down. He'd probably enjoy himself.
Jonny you got it all wrong. Leading a virtuous life does not mean that you comtemplate about what's right or wrong all day. All you need to do is think rationally before you act. That's all you need to do. Well, you must also act too.
If you think Aristotle's views are silly when it comes to happiness, you have a lot to learn. Maybe you should try applying them as much as you can for the next 3 months or so, then see how you feel about yourself later. Trust me, you just get happier about things.
Note: I'm assuming you know how to act according to Aristotle. It's not as easy as it looks, but practice is what it takes.