Only you can really determine whether you need a consultant's help. But don't get caught in the trap of thinking you can do it all. Bringing a product from the idea stage to the marketplace is a complicated, difficult process. Stop for a minute, and make a list of all the issues you're tackling. Are you having trouble making a prototype? Do you need another employee but don't know the best places to look for one? Are you interested in manufacturing your product overseas but haven't a clue how to get started? If you have other areas that need your attention and you can't afford to make too many mistakes with your capital, then you're the perfect candidate for a consultant.