Ask the richest man in the world. 
And ask if his riches was able to buy him joy and peace.
And ask if his riches was able to buy him joy and peace.
Being rich is different from being the richest, I don't want to be the richest. I just want to be rich enough not to worry about by economy in any point of life.
I wouldn't even need that much. Just enough money to pay the bills and feed my family.