On the soccer field (and in classroom for that matter) you can work hard and do a thousand different drills without getting very far. Hard work is definitely a prerequisite but it simply isn’t enough. We often overrate hard work in evaluating the effectiveness of any practice or training. Training and development that is merely ‘good’ is not enough to make players or teams significantly better than anyone else. Even a higher quantity of ‘good’ practice won’t set you apart.