There is no such thing as success in dressage, unless you ride Totilas, in which case just as you achieve it it is snatched away by someone richer than you. To the extent you achieve success on your own terms beware. A “successful” British rider is not quite good enough for the international circuit. A “successful” pony is an expensive old one which requires steering round the course by a rich young rider (to be handed on to the next in due course). A “successful” rider is a rich one training in the right yard with the right trainer and the right connections, with a flash Dutch/German horse recommended by the aforementioned trainer. A “successful” trainer sells a strange and usually foreign “method” , excluding all others and charging as much as possible whilst looking for the video and the next best thing.
True success of course is different and something the THF can only hope for in the Strictly synchronised swimming world of dressage. The personal satisfaction of training your difficult young horse to do the test; a place rosette; a happy and grateful child are not the stuff of true dressage, where patronage, backbiting and the following of rigid and fashionable form are the order of the day. Learn this quick and with cash you may truly find success as a THF.