Regret.

Have you ever regretted something? I think we all have. For me, it's not working hard enough in school and striving to do the best that I can do. End outcomes can get us frustrated blaming things or people we shouldn't be blaming when really the fault is on us. It can get us saying "Wow, maybe I should have tried harder." Pushing ourselves is the key: committment, focus, and motivation. Lacking those things can hurt us in the long run making it harder to get back on track. Procrastination is another deficiency. Never put things out for the last minute. It just makes things more strenuous and adds more labor in the end.

Proverbs 12:24 - The diligent hand will rule, but laziness will lead to forced labor.