Lamar Odom was inspired to go to rehab by a friend who is in prison for attempted murder.
The former basketball star visited his pal William Gregory at a Delaware prison back in September, where they discussed the hardships Lamar had faced since he was rushed to hospital after he was found unconscious after a drink and drug binge.
The pair reportedly talked for 45 minutes and Gregory advised him to take control of his own life, TMZ reports.
Meanwhile, Lamar’s attorney says the 37-year-old sportsman is "doing well" in rehab.
Attorney Walter Mosley said: "I have had reports from the doctors that he’s doing well. This is a preventative forward looking movement by Lamar. We have a lot of very important things lined up for next year. I like to say Lamar is on a comeback tour in 2017.
"It’s about maintaining health, being healthy, doing what’s right for his family, being a better father, just improving himself. This was his idea and he has the full support of the people who work for him, his family, staff and everyone around him.
"It’s 100% of bettering himself. Being a better father to his kids, being a better friend and just taking responsibility and live a more healthy and fulfilled life. There’s a lot to live for. He’s young. He has the rest of his life in front of him. He has a lot to look forward to."
And a source previously claimed Lamar – who is now officially divorced from ex Khloe Kardashian – voluntarily went to rehab to help him "start fresh for the New Year".
The insider said: "He went to continue making sure he stays sober and on the right path. It was something he chose to do. He did it for his kids and also wanted to feel 100 percent again. He did not relapse, but felt like he wanted to get away and start fresh for the New Year."