It is extremely important to evaluate and reflect before you start getting cozy with some venture capitalists. Be realistic with yourself about the potential costs and sacrifices that you might have in the future (whether they be a lack of a social life, financial instability, stress); most importantly, make sure you're not being blindsided by your dreams of striking it rich! Talk it over with someone close and make sure your reasons are grounded.
Additionally, make sure you're willing to commit yourself to this venture for the next 5+ years of your life (at least). It'll take awhile for your company to break even (if you're taking a loan), so don't expect to strike it rich overnight. If you have a solid idea and am willing to work hard, anything is possible :)
Hope it helps!