Difficult to bring up child

I quarreled with Souta, who is my son and six year old, today.The cause of the quarrel were very small things,but we are strong-willed and short-temperd as we can't apologize frankly to each other. Even worse, if one apologizes to another, the other can't forgive immediately because we are both stubborn...Souta is like me as far as his bad character is concerned because he has grown to watch what I do all the time.I have to change myself to be a good person for Souta.I will be going to apologize to him frankly tomorrow.It is difficult for me to bring up children but I'm very happy to have my child in my life.