chris pratt jurassic worldUniversalBefore starring in the highest-grossing weekend movie debut ever, Chris Pratt lived out of a van in Hawaii.
Rags-to-riches stories don't just happen in the movies. 
Some of the world's richest and most successful people didn't start off that way; they spent nights sleeping on the streets, in their cars, or on friends couches.
Here are 17 incredible stories of people who turned misfortune into great success.
Vivian Giang contributed to an earlier version of this story.