I also agree that my ambition level often runs away with my technical level, so I'm always trying pieces that are too hard for where I'm at currently.

That's a good thing isn't it, just as long as you recognise it and don't become discouraged? Many people get to a comfortable level and don't attempt to move beyond it.

Years ago at work I heard a manager referring to another staff member "he doesn't have twenty five years experience, he has one years experience twenty five times.".