A great trainer once said to me ride the horse that you have on the day what this translates to is you need to make the assessment of your horse whether they feel tired energetic or more subtle than the day before this greatly affects the workout. Your horse is always communicating with you as a writer you need to make the choice of went to push them and when to stop when is best to start something new and when is best to go back to the basics. Always aim towards the horse being happy calm and willing in the workout