Samurai-type extraordinaries often make two mistakes during training.
The first is their basic skills are not solid.
The second is too little actual combat experience, and poor psychological endurance.
Not having solid basic skills is relatively easy to resolve, just practice every day.
The problem of too little actual combat and poor psychological endurance can be solved through sparring ranking competitions.
During the ranking competitions, as scores rise, one will soon encounter opponents of similar strength, as well as those stronger than oneself.
People with good mental toughness, even if they lose miserably, will not suffer much impact, and when they win, they won't develop arrogant complacency.