the boundaries of personality / border

I'm trying to define human condition, human nature. To find answer to the question "who we are?". I'm asking about the boundaries of human personality. What makes us feel ourselves? What creates personality? Is it character traits, desires, repetitive behavior, emotions, experiences? What makes the personality consistent and what factors can destroy it?
The way I create the drawing is essential. It was hundreds hours of work, in a trans like a monk who makes mandalas, a kind of meditation. It was time to contemplate myself, to clean the mind from many stimulus surrounding me.

self-portrait, created from 9 separate black papers, drawing with thousands small squares