> discouragement is more of a sign that they're not enjoying the activity. When someone really enjoys something they like finding the flaws in what they're doing so they can get better.

Are you sure this correlation is unidirectional? As a tutor, I frequently get people to enjoy things they didn't before simply by trying really hard to avoid discouraging feelings. In a way, a large portion of my tutoring is about getting people to enjoy the things they used to hate, because that appears to massively improve retention rate.

There's some more here if you're interested in how you get people to enjoy stuff: http://jorendorff.github.io/hackday/2013/tutoring/