H1-B is a lottery. It is not guaranteed at all. There is a set number of visas issued each year. Google "H1-B lottery". Check out the latest Bloomberg article on it. Last year, on the fifth day when they received a specific number of applications, they closed of any new applications and did a lottery on who will get the visas.

I'm graduating in May - I cannot self employ myself :). I already accepted a job offer with a startup, and they will be applying for H1-B for me in two consecutive years. If I don't get it, I'll have to leave. Otherwise, I get H1-B for a max of 5 or 6 years I think