Fomer NFL running back Rashard Mendenhall says he has NO REGRETS about quitting football in March at the age of 26 ... saying he's now a TV writer with a gig on an HBO show.
Mendenhall -- who won a Super Bowl with the Steelers in 2009 -- wrote a blog for the Huffington Post saying, "I wasn't supposed to walk away from the NFL, but I did. I wasn't supposed to be writing television, but I am. I'm supposed to be lost after football. I'm not."
Rashard says he moved to Santa Monica earlier this year and became a member of the Writers Guild of America, West to pursue his dreams of writing for a TV show.
And in just a few months, Mendenhall says he's already got a pretty sweet job -- "I'm on the writing team of a new show that will air on HBO next summer."
"A year ago, a writing career was just a tiny seed of thought as I prepared for my sixth NFL season. And as I write this now, it has already begun to sprout. Through this experience I've learned that you can will your dreams into existence."