You are crazy for thinking you are going to change this guy. His whole career is built on telling people he's something he's not so that he can sell them insurance.

Use the time you spend on him to further shore up your marriage because it doesn't sound like he has anything to share with you that is useful. Meanwhile, your wife has been by your side for 13 years, and you have three children to raise.

Focus on the things that matter. This guy is not one of them.