Ask HN: Job or startup?

First some background: I've been in sales for years and frankly, I'm sick and tired of convincing people that my services are of value to them. I have the chance to get in with a small web design business here as an intern, but they're looking for people who are willing to make a career with them. For years I've wanted to start a business of my own. The issue I have is that is I have encountered exactly 0 success in my efforts. And I'm not sure that I'm totally committed to the chase anymore. I've been broke for years and frankly I'm sick of ramen and hotdogs. I love HN and I respect the opinions here. So should I go the career route and have a reliable income, or continue to work toward having my own business when all precedent I have indicates I won't be successful? Thanks for any help.