You must analyse why you're failing. Is your product not good enough? Is your strategy lacking somewhat? Is the concept itself flawed? If it's the last one, th

You must analyse why you're failing. Is your product not good enough? Is your strategy lacking somewhat? Is the concept itself flawed? If it's the last one, then it may be time to call it a day. Explain to your investors that you were unable to validate the concept, so it's best to cut their losses. It's a tough conversation, but the ethical thing to do. If it's the other things, I'd give it a bit more time. I've run a few successful start ups in the past (as well as now), and traction takes a while and develops in obscure ways. If you need someone to bounce ideas off, drop me an email (in my profile). All the best!