The 21-Day Challenge! Research has proven that it takes approximately 21 days to form a habit. Habits are essential to living a successful life. Without positive habits, we fail in most things we attempt to accomplish. Good habits are vital to reaching our goals in life. They help to keep us focused along the way and keep us pushing on, even during tough times. The key issue in developing a habit is consistency. This brings us to the concept of affirmations. If you will consistently practice the habit of positive affirmations for 21 days, your habit will become a part of your everyday life. Once these affirmations become a part of your life, never retreat into negative thinking or speaking. Keep up the practice of "affirmation" or speaking and thinking positive thoughts.