7. Justin Bieber
Having started his music career at the age of 16, Justin Bieber was bound to face some boundaries along the way. Having notoriously been known as the good boy who turned bad in the industry, Bieber was known to get into physical altercations, along with several arrests, multiple drug scandals involving sizzurp, and being caught cheating on Selena Gomez in public. JB was literally doing all the things that were going to ruin his reputation as the sweet boy he once was. Justin remains to be one of the most successful pop stars in the world, having recently scored his first Billboard number 1 with, What Do You Mean?