In what ways can analyzing one's own behavior contribute to personal growth

A man can objectively take a closer view at their own particular patterns of behavior and figure out what is unsafe and what is valuable. Benjamin Franklin made a routine with regards to consistently checking himself and enacting different rules to make him more effective, like he is known to have said:

" I was surprised to find myself so much fuller of faults than I had imagined; but I had the satisfaction of seeing them diminish."