Willfull 6 year old boy, on my last straw

Thank you so much for the info that has been shared. However, I think I need to clarify and add more details where I couldnt earlier for the sake of time. He is not ADHD, he has regular, consistant consequences (loss of deserts, playtime, removal of preferred toys, time outs). Then for chores he has had sentences to write, long walks to school, added chores inside and outside, early bedtimes. In all of this he either refuses to do it or blames us because he has to. We lovingly but stearnly remind him that his choices have brought this about. To which he still is in his own reality and insists that we dont have to do this and to give him another chance. We have allowed him to pick his own reward even on a daily basis gradually working up to bigger weekly rewards. He doesnt care. He just tells us that we can give it to him anyway. He is willfull and head strong. Also, my wife and I have never refered to the boys by their "nick-names". These were names given by some of the people that knew the boys before we did.:thanks: