Singer Darius Campbell rose to fame on Popstars, the 2001 talent show which formed Hear'Say.
After performing a misjudged cover of "Hit Me Baby One More Time" during one of the show's audition stages, he was kicked out. A year later, he entered Pop Idol and ended up being voted third, after Will Young and Gareth Gates. A platinum selling album, world tours and a career in musical theatre followed. Here, he shares some of the lessons reality television taught him.