Matt Barnes has a simple message for NBA players following Ja Morant's gun video controversy -- DON'T SNITCH ON YOURSELF -- telling TMZ Sports hoopers don't need to document their every move on social media.
Barnes expressed support for Morant while outside Dash Radio this week ... but he thinks his strip club gun video can be a cautionary tale for other guys in the league as they try to navigate their personal lives while being recognizable athletes.
"Don't tell on yourself and watch out for cameras," Barnes said. "The second you step out of your house you're being recorded these days. So just stay cognizant and be aware of your surroundings."
Morant entered a counseling program shortly after apologizing for his actions ... and recently said he met with therapists, got reiki treatment and worked on anxiety breathing during his time away from the game.
Barnes told us he isn't ready to give up on Ja or his career, saying the guard is "one of my favorite players in the league" ... adding Morant "got a little ahead of himself with some stuff."