I found A students were more faithful doing their homework than D students.
Homework is preparation for success in life.
Runners spend all their waking hours to prepare their 10 second run at their competition.
Professional golfers hit tens of thousands of those little white balls year after year for a four day tournament.
Olympic participants practice year after year to win in their meets. They sacrifice normal pleasure. They sacrifice sleep. They sacrifice certain food they enjoy. They persist and persist to improve their performance.
What do those successful people have in common? Practice. Practice. Persistence. Sacrifice. Diligence. Determination. Clear goal.