Could I do the tapping on myslef to help someone close to who is unwilling to try?

I have a son with major depression and have tried all the natural remedies. They help but nothing seems to really work. I know he won't let me do the tapping on him; I don't think he believes that it will work. I keep playing with the idea of doing the EFT tapping on myself while focusing on him. I need to know if that's something that would work.