Chris Brown is in a "downward spiral" of drug abuse and destructive behavior, according to\u00a0a new\u00a0Billboard story about the troubled R&B star.\u00a0Sourced from industry insiders and Brown's former employees and associates,\u00a0the story\u00a0paints a picture of an artist continuing to sabotage his talent through substance abuse, anger, and obsession. In\u00a02014, after being released from jail for a probation violation,\u00a0Brown was said to be off drugs and feeling\u00a0better.\u00a0In 2015, his team told\u00a0Billboard, he broke sobriety; he now\u00a0reportedly uses\u00a0cocaine, lean, molly,\u00a0and\u00a0Xanax, passing out on his couch at night in a messy living room. Former manager Michael \u201cMike G\u201d Guirguis quit in May 2016\u00a0and is now\u00a0suing the singer\u00a0for allegedly beating him up in a "(drug-fueled) rage." Brown's publicist, Nicole Perna, quit the next month, and the story presents a celebrity who is verbally abusive to those he employs. Describing one day last year, Billboard's Danielle Bacher writes: A delivery man arrived and began ringing Brown\u2019s doorbell. \u201cDo your f\u2014ing job!\u201d barked Brown at one of his security guards, a hulking man who had been living for the past three-and-a-half years in the home. But the guard, who was off duty, was asleep, and his partner was outside. Like many other nights, the guard had stayed up late to check Brown\u2019s pulse. The bell rang again \u2014 this time, it was a construction worker who had been employed at the house all week. Brown paced back and forth. Finally, he lost his temper. \u201cI\u2019m going to show you what it\u2019s like not to work with Chris Brown for two weeks!\u201d he shouted at the guards, kicking them both out of his house. These days, Brown reportedly spends his time\u00a0tracking the activity of his ex, Karrueche Tran, via Instagram, sparking a much-hyped and now-cancelled boxing match with Soulja Boy. Tran recently obtained a restraining order, saying Brown had threatened to kill her; yesterday,\u00a0TMZ reported\u00a0that\u00a0a friend of Tran's obtained a second restraining order based on additional death threats. Meanwhile, Brown's career is in limbo. He continues to score minor chart hits\u00a0as a featured artist, but his next solo album, Heartbreak on a Full Moon, and a documentary, Welcome to My Life, were announced months ago and haven't materialized. He is set to embark on a 33-date American tour at the end of this month, and though it may give him some structure, it was on his European tour last summer that things completely fell apart. Brown lost Perna and tour manager Nancy Ghosh, who\u00a0Billboard\u00a0reports quit because Brown threatened to beat her up after she asked one of his cousins to not smoke weed on her bus.\u00a0Billboard\u00a0quotes a team member who says: \u201cOnce he did what he did to , there was no structure,\u201d that former security team member says. \u201cWe had no manager telling us what to do or where we were going. He would make people sleep on the bus when he was mad at them. He was threatening people and cops. He was calling himself the devil.\u201d Brown's\u00a0label,\u00a0RCA Records, nonetheless says it continues to support him. Read Billboard's full story here.