Try to explain why you are doing what you are doing to others or in front of a mirror. While explaining and at the end of end of explanation , if you not convinced with yourself with your explanation, then you do not believe in what you are doing strong enough and you are just doing it due some of external motivator. That means there are high chances that you might lose your interest and commitment at any moment due some external circumstances and events in life.
*Do read the Disclaimer