So it’s been a rough few weeks for Justin Bieber, right? He’s had some concerts canceled, some paparazzi battles, a split with his girlfriend – but he’s pretty much stayed positive. But it looks like he’s had enough.

On Thursday, Justin posted a long rant on his Instagram account, calling out what he called malicious lies about him, his career, his family, and his health.

“Everyone in my team has been telling me, “keep the press happy,” but I’m tired of all the countless lies in the press right now. Saying I’m going to rehab and how my family is disappointed in me. My family is beyond proud, and nothing’s been said by them. My grandparents wouldn’t know how to reach the press even if they did want to,” wrote Bieber.

The singer, who recently celebrated his 19birthday, continued: “If anyone believes I need rehab, that’s their own stupidity. LOL – I’m 19 with 5 number one albums, 19 and I’ve seen the whole world. 19 and I’ve accomplished more than I could’ve ever dreamed of. I’m 19 and it must be scary to some people to think that this is just the beginning.”

Bieber’s long time manager, Scooter Braun, spoke out in favor of Bieber, too. “There’s nothing wrong with him,” Braun told E! News. “He’s in a great place.”

Of course, there’s reports to the contrary. “He had kind of appeared zonked out and strange for a while now,” a source says. “And some who worked with from the beginning re upset he’s abandoned his underground cred to pump more poppy selections like “Beauty and a Beat.” He’s talented, but right now he’s a self-indulgent waste.”

Wow, well okay. But let’s start with the craziest part – Justin Bieber, underground cred??

Click Here for some photos of Justin.