Every startup has the chicken and egg problem -- It's worth a million dollars, but only if it had the customers/dollars/advertising/partnerships to make it succ

Every startup has the chicken and egg problem -- It's worth a million dollars, but only if it had the customers/dollars/advertising/partnerships to make it succeed. You've obviously got belief and vision for the project, which are great traits to have. But consider yourself being an investor. How do you calculate the ROI? Will giving you $500/week (peanuts) generate a future return of $1,000/week or $20,000/week, or maybe just $10/week? Investors are business people, so they need some way to guesstimate a ROI. If I sponsor you, then how can you convince me that I will at least break even on the investment within the next 2 years?