If I've learned anything from watching Entourage reruns, all you need is a foot in the door and you're primed to fail upwards. The amount of coke and skanky blondes is directly proportional to how terrible you are at your job. Fail hard as a head writer, you got a bright future as a producer, fail harder at that and you'll be directing your own pictures in no time.
Sounds perfect, I'm horrible at writing stuff so I should fall upwards in no time!