LOL! my old jumping instructor (when I took jumping lesson) also said "perfect practice makes perfect".
But My dad always use to say to me when he was teaching me to ride "get on and ride" and "if you fall off get right back on and ride some more" LOL! or my favorite one was when I was in pain from all the working out on my horse, my dad would always say "Deal with it" :) I love my dad! :)
When I can't ride anymore, I shall keep horses as long as I can hobble along with a bucket and wheelbarrow. When I can't hobble, I shall roll my wheelchair out by the fence of the field where my horses graze, and watch them!