When Garrett tries to run and it gets stopped, or loses yards, he thinks it won't work and then goes away from it. Also, how is it that they can't seem to move Austin around enough to get him 1 on 1 with a safety, teams like the Colts and Patriots can do this with no problems, but he just lines Austin up and sends him directly into double coverage.
So line it up, run over guys in front of you. If it doesn't work, line up and try it again and again and again. But Garrett wants to score 40 points a game as if that's the key to winning Super Bowls.
Take your time, use your running game, play defense, then hit them when they're tired of getting pounded on.