That's a good idea! I've helped my DH learn to be a bit more frugal with money. At least he's a heck of a lot better than he was when I met him all those years ago.
Yes he's gotten better about it. He grew up with a type A SUPER controlling father so he hates feeling like he's being told what to do. So after 6 1/2 years of marriage I have finally figured out how to suggest without putting him off! And he's learned I'm not trying to control his life!