Do you want to break a bad habit? You can do it, especially with a little help from DOIY's 21 Days to Stop Tech Addiction or 21 Days to Better Eating Habits. According to Dr Maxwell Maltz, who wrote the 1960 self-help book "Psycho Cybernetics", it takes a minimum of 21 days to adjust to a physical change. Modeled on this principal, the DOIY 21 Days Technique lets you set up a routine, along with a very useful daily tip that will help you achieve your goal. Encouraging bracelet also included!