The beginner is attracted by novelty. The whole newness of the activity keeps it exciting and interesting.
But to become a master you need to train for years and novelty doesn’t last forever.
Once novelty has played it’s part, it’s best to progress onto something more sustainable like nuance.
That’s usually the reason why the more you practice the less fun and more focused the exercises become.
Hat tip to Angela Duckworth and her book Grit for this insight.
Thomas Duggan 