A lot of succesful products have poor usability. Inversely, a lot of highly usable products have no users. Usability is the starting point, not the end goal (Guillaume Thoreau).
It’s a lot harder to make a product compelling than usable. So, forget about usability for a moment. Focus on what can make your product great: the copy, the brand experience, the look & feel, the purpose, the ease of use, the performance, the emotional response; the overall user experience.
Your product should have soul and stand for something. When it does, resume usability testing. Your product’s fundations will be that much more solid.