Romo has had a tough few years, with Dallas having not made the play-offs in four seasons.
To compound that, the Cowboys QB injured his back last season and was required to have surgery before the season ended.
'America's Team' lost out in week 17 of the 2013 NFL season in a do or die game against the Philadelphia Eagles.
Romo and the Cowboys will be hoping for better in 2014, and Miami Heat NBA star James has plenty of advice for his hero.
LeBron is an avid fan of the Dallas Cowboys, and he's been quoted before giving his support to Romo.
This time he went down the route of urging the QB to just concentrate on his craft rather than worrying about what critics had to say.
"Just don't care what everybody thinks," he said. "If you care about your craft and at the end of the day if you went out there and you gave it everything you had and you laid it out on the line for your teammates, you can sleep comfortably at night.
"Don't watch ESPN and all these so-called 'everyone knows what to do that ain't never put on a uniform, trying to tell you what to do' [shows].
"It's not about that. I think Tony's at a point now in his career where he's one of the greatest quarterbacks we have in our game because of his work ethic. Nobody woke him up in the morning to go to practice. Nobody told him to go to OTAs.
"Nobody told him to stay after practice and throw to his receivers. He just goes out there and does it. We all make mistakes, but at the end of the day, if you work on your game, you can live with that."