A few ideas: show your product to a diverse base of customers to avoid any super-techy or early adopter biases (unless, of course, your product is mostly for th

A few ideas: show your product to a diverse base of customers to avoid any super-techy or early adopter biases (unless, of course, your product is mostly for them), quantify the findings, and be systematic about improvements. If there are issues in areas outside your expertise, such as marketing or UX, find professionals you respect who can advise you. Also useful to set metrics beforehand for what you consider success/failure, i.e. # of customers acquired within a certain timeframe, customer growth rate, engagement, etc.