Adding to what Fancy said...you'll probably get the feeling it's time for someone new when you realize that you're not picking up anything new and every lesson seems like the same and you're stuck in a rut.

Fancy, I really couldn't tell you why I don't prefer the advanced jump students. I guess for the same reasons that I prefer to teach private lessons instead of groups. (I'd make more money teaching groups, but I rather the one-to-one session.) I guess maybe it's because we all become specialists to some degree in the areas we feel most comfortable and enjoy the most. I absolutely LOVE building strong basics in students early on and I really love working with students who have confidence and fear issues. It works out well because many instructors don't like dealing with these types of riders, but I love them. Likewise, some instructors hate flatwork days and prefer jump days...I'm the one that enjoys making the most of the flatwork as dressage days. Just a matter of taste that could be because I began as a fearful rider and had instructors who just made it worse for much of my junior years. I'm very sympathetic to such students.