Perfectionism
At first, some consider perfectionism as helpful. Perfectionism can lead people to achieve great things and give them motivation. However, it is considered to be a belief that is mostly unhealthy and harmful. Perfectionism makes people set goals that are unrealistic and cannot be reached. This leads to many problems like depression, anxiety, eating disorders and low self-esteem. Perfectionism may also lead to procrastination as it allows one to avoid being less than perfect ("I can't do this project until I can do it the right way."). This can mean low productivity.