Originally Posted by andfor
Kids get enjoyment from knowing they tried hard, learned something and improved something. This is the foundation for growth in most all endeavors and for long-term interest and continued participation.
Yes, but they wont try hard or enjoy something unless they are having fun. When something becomes a "must", you will automatically loose interest. The will of getting better must come from within, otherwise you wont give 100% or dedicate yourself enough to it, tennis in this case.