The Ugly Monster of Money Jealousy

This is a real tough one, and a topic not often talked about...though if you've got siblings, you may have already encountered the issue at some point.

What happens when you have MORE or LESS money than a sibling?

Here it's not a matter of the other person coming from a different background or having more family wealth.  The person likely grew up with you, maybe even shared a bedroom with you and darn share most of the same DNA!

So what do you do when you're jealous of a sibling's money?  Or if you're the one with the money?  (Lucky you!)