Heredity or Environment

(Pro 9:13 KJV)  A foolish woman is clamorous: she is simple, and knoweth nothing.

Are we talking about personality types or learned behavior?  If you have more than one child, you realize they are different from the day they are born.  I see the same thing in our grandchildren.  So there is always the reality of how you were born.  That does not mean that you cannot change.  If you are an introvert, you can learn to be comfortable in groups.  I remember how terrified I was standing up in front of a crowd, then I was a preacher.  Later I was a teacher.  These require standing up and talking.  I would imagine that extroverts could learn to tone it down also.

So?  The results of coming to Christ are personalities that conform to His image.  It is the reach of everyone.