Making a habit depends on the habit, you, and your efforts. Scientists say it could take from 21 days to eight months. This varies each habit is different.
Many believe takes 21 days to form a habit. This idea came from Dr. Maxwell Maltz, a doctor. He found that his patients spent about 21 days (get) used to a new way of seeing themselves. Mark Vahrmeye, a therapist, says 21-day rule seems easy. But often, it takes longer to make a habit. Dr Maurice Duffy, who (teach)about thinking patterns, says that our daily (act) are our habits. Alyssa Roberts, who researches eating habits, says habits (make) by repeating something. When we do something many times, our brain starts to do it without thinking. Author Charles Duhigg explains the "habit loop" . A habit has three parts: an activate, the habit, and a reward. For example, stress might lead to overeating to feel better. If this repeats, the brain will see stress a chance to eat for comfort.
How fast you form a habit depends on the habit. Simple habits like drinking water are (quick) to form than harder ones like exercising a lot. A 2016 study found that believing in yourself is the key to forming habits. If you think you can keep a habit, you likely will. This (believe) helps in quitting smoking, losing weight, drinking less, and exercising more.