Personality and ego.

Even though feels solid, it is a mere illusion. A set of values practiced a lot.

I am of a certain kind, of a certain nature. So is everybody. That nature is learned, You can practice and become whatever kind of person you want to become.

You can be an honest man, a saint, a lover, an impulsive person, a strategic person, an addict. a time-waster.

Whatever the kind of actions you take that kind of person you become.