&#x27;Nothing&#x27;? Well, except a fuckload of experience, probably. Either spend 4 hard years at a top university or 10 years of consistent, hard work doing it all by your lonesome, maybe with and maybe without the benefit of being able to &#x27;practice&#x27; at work. I don&#x27;t think all it take is &#x27;belief&#x27;. There is some actual hard work to be done.