Lamar Odom Says He's Found His Purpose After Acquiring Rehab Centers

Lamar Odom is sharing how he turned his pain into purpose by investing in drug treatment centers ... saying he couldn't be happier to help others and save lives around the world.

The former NBA star joined us Monday on "TMZ Live" to explain why he acquired 3 rehab centers in California, and it's pretty inspiring -- he says his goal is to help others battling addiction turn their lives around, as he did years ago.

Lamar tells us he now feels certain he found his purpose after God saved him from his nearly fatal overdose ... adding the fulfillment he's gotten as a basketball star doesn't compare to the feeling he gets from helping others.

He says it feels amazing to see and hear how he can touch and save lives ... simply by sharing his story.

You'll recall, LO overdosed at a Nevada brothel in 2015 and suffered kidney failure, heart attacks, and several strokes.

Since then, he's done a complete 180... after he himself went through rehab.

And, he has high hopes for others to do the same. As we told you, he teamed up with Christian hip hop artist Dontae Ralston and former Hall of Fame skateboarder Dennis Martinez to acquire the facilities in San Diego, El Cajon and Lemon Grove.

The 2-time NBA champ tells us the 3 centers are only the beginning and his plan is to expand all over.

We also asked him about former "Jackass" star Bam Margera, whose struggle with sobriety has him in a ton of drama with his estranged wife and son. Lamar has a word of advice for Bam and others in the grips of addiction.