(CNN) Justin Bieber has once again turned to social media to get real about his life.

In a long and detailed Instagram post on Monday, the superstar singer talked about the difficulties of having come to fame at a young age and how he spiraled.

Bieber, 25, wrote about not growing up in a stable home and how he was then thrust into the spotlight after being discovered at the age of 13.

"Have u noticed the statistics of child stars and the outcome of their life," he wrote. "There is an insane pressure and responsibility put on a child who's brain, emotions, frontal lobes (decision making) aren't developed yet."

According to Bieber, he found himself "...18 with no skills in the real world, with millions of dollars and access to whatever I wanted."