It is surprising how often a good experience at a clinic can fire the desire to ride more often. So many people come away from a clinic and feel excited to ride more often. They feel the thrill again and it is no longer a dim memory.
With a horse (and people too), the panic reaction has 3 stages. The first is a rapidly rising response to fear. The second is when the fear response is no longer increasing but is steady. The third stage is a diminishing response to fear.