Yesterday I had my first riding lesson in nearly two weeks.  Heather has just hired a new instructor to work Saturdays; it was my first lesson with her.  I was excited about this; when you've been with one instructor for a period of time, it's nice to get someone else in there to "shake things up."   I rode Bruno (Heather has decided he's the best mount for me to re-learn the canter).  Before beginning the lesson, Heather briefed Christina on me (blah blah blah accident-cakes).  Christina also asked me to tell her a bit about myself as a rider.  ("I am a dressage rider and we are working on getting me back to cantering.")  Bruno had worked in the lesson before mine, and even I commented on how slowly he was going.  We decided to do some lunge line work, which would allow me to go with no stirrups and then with no reins.  (All of this is working on my balance.)  After some new balance exercises (which were excellent and gave me a new perspective), Christina said to me, "Your balance problems are all in your head.  Nothing physical is holding you back."