A little artfully managed Sloth can also be strongly contributory to success. I sleep 9 or 10 hours a night nowadays, therefore in the 3-4 hours/day that I do my business work, I get more done, and at better quality, than my competitors who drive themselves day & night.
Managing and directing one’s bad habits to one’s benefit, I have found throughout life, is vastly more effective than simply trying to fight them.
Which seldom works out anyway.