If you're an adult and still think material wealth leads to happiness, might I suggest not being a moron.
The expectation of happiness creates a lot of unhappiness.
Happiness is a carnival game. It's never as easy as it looks, but the dumb ones always seem to be walking around with a big stuffed animal.
Money can't buy happiness, unless you're favorite hooker's name is 'Happiness'.
I'm pretty happy for someone who struggles with happiness.
Living one's life with unguarded vulnerability is one of the keys to happiness. It's also one of the keys to getting mugged.