PLEASE NOTE: THIS EDIT CONTAINS EXPLICIT LANGUAGE<br /> <br />It's fair to say Justin Bieber hasn't had the easiest of times so far during the leg of his European tour.<br /> <br />His London stay was marred by a 2-hour delay to his first show, he collapsed on stage at another one and had a run-in with paparazzi.<br /> <br />A concert in Portugal was cancelled altogether.<br /> <br />But on Thursday (March 14) the Canadian pop singer hit back at critics.<br /> <br />In a posting on his Instagram profile, the 19-year-old singer said contrary to some media speculation, he was not going into rehab, and felt he had done nothing to deserve the negative press surrounding his European tour.<br /> <br />Bieber said he was "tired of all the countless lies in the press", adding he was a "good person with a big heart" and has worked very hard to get where he is.<br /> <br />The clean-cut Canadian teenager has had a meteoric career since being discovered on YouTube in 2008. And he suggested envy of his success might be at the root of all
