Why do you think that you will be one of the few to last long-term? Talk to the hiring manager about what sets you apart from those who do not make it.
"I feel this industry has a very high turn over rate because it is stressful and a lot of hard work for little income at first. I know that I can make it long term because I do possess more tenacity than the average person. I really want this and will do what it takes to succeed."