iternabe Maybe that's one main benefit of having a teacher
Let me grab this question and run with it π I don't think the main benefit of a teacher is to make one do the hard part of the lessons. In other words, it's not their job to motivate the student or shove theory down their throats.
I think the main purpose of a teacher is to correct bad technique, wrong posture, counting issues, teach more subtle ways to express the dynamics, etc etc. In short, to make the student a better player. As a self learner we have to judge all these things to the best of our ability, with varying degrees of success. It takes a very special talent to be able to improve on all that without any guidance.
And yes, I fully realize I'm one of those without a teacher - but then again I'm also not overly serious about getting to a certain level in a hurry. I am realistic enough though to say that if one is wanting to reach a "professional" level, at some point one needs a teacher. Theory is only a small part of it.