" Takeaway: Motivation and self-discipline are nice to have. Motivation, however, is often emotional and temporary, while self-discipline can be exhausted. But having solid habits will deliver the same results with far less pain and suffering. Habits have been shown to take around 66 days to form, so all you need to do is commit to small actions (mini habits) for that amount of time. How successfully you are able to keep to your habits is in part influenced by Joseph Grenny’s six factors of influence. "

― Peter Hollins , The Science of Self-Discipline: The Willpower, Mental Toughness, and Self-Control to Resist Temptation and Achieve Your Goals