Nasty Gal is an LA-based, e-commerce juggernaut founded by Sophia Amoruso and the origin story is inspirational stuff. Sophia's always been a huge fan of vintage clothing and started selling some of her wares on eBay in 2006. About a year-and-a-half later, she made the crucial decision to branch off to start her own website and made a cool $72,000. She reinvested all of it back into her company and business quadrupled each subsequent year with 2011 seeing $28 million in revenue. This year culminated in Nasty Gal launching its own house line during fashion week duly called Nasty Gal Collection. Now, if that doesn't light a fire under your ass to pursue your dreams, I don't know what will.