LOS ANGELES, April 19 — It’s been years since the world was shocked with news that he assaulted Rihanna and Chris Brown is finally opening up about that violent episode.

Brown recounts his overnight rise to fame and fall from grace when he assaulted Rihanna the night before the 2009 Grammys in his first full-length documentary Welcome to My Life: The Official Chris Brown Documentary.

“This is the first time I get to say anything,” Brown says in the preview.

“I went from being on top of the world, No. 1 songs, being kind of like America’s sweetheart to being Public Enemy No. 1.

“I felt like a f**ing monster… I was thinking about suicide, I wasn’t sleeping, I barely ate.”

In the documentary, artists such as Jennifer Lopez, Mary J. Blige, Rita Ora and Usher offer their perspectives on the R&B star’s career.

The trailer doesn’t say when the documentary would be released, but it does end with Brown saying: “If there was ever a doubt in your mind Chris Brown was done, he was finished: I wouldn’t bet on it.”