Too strong.
Nobody EVER got successful from luck? Not even people born billionaires or royalty?
Nobody can EVER be happy without using intelligence? Only if you’re using some definition of happiness that includes a term like “Philosophical fulfillment” or some such, which makes the issue tautological.
This quote reminded me of a quote from an anime called Kaiji, albeit your quote is much more succinct.
Yukio Tonegawa in Kaiji