Well, whenever we go on a trail ride, my mare is really calm and goes really nicely and sensibly. I have more trouble with getting her to move than getting her to stop!
However, when I try to do some dressage stuff in what I call the arena (its actually a very overgrown old hockey field), she gets really fast and I can't get her to stop rushing. This makes it difficult because she hasn't got particularly good balance anyway and she makes it more difficult for herself by rushing. I don't want to be pulling on her mouth all the time so I've tried doing some smaller circles but she rushes these too and fights my hands. Its really not like her as she's more apt to walk idly along than do a really fast trot. I mean, I can't even get this horse to gallop out on the trails! She's that lazy! What is going on with this rushing and how can I stop it?