The notion that you are in control and can will your mind into believing so much about yourself comes into play here. It is very important to identify the authority and control you have towards yourself. One of the major keys to having the ultimate self-confidence is being able to identify that you are not dealing with the surface, what needs to be dealt with is deep within you. Feel free to make the changes and be committed to them. The remarkable feeling of freedom cannot be compared to anything when it comes to self-confidence. The problem comes when you as an individual can value yourself and have a great belief that you are worthy, i.e., self-worth. It is your very self that can grant that feeling to your senses, which would be the very thing followed after identifying and defining truly what self-confidence is to you.