Sorry to hear that. I had a similar experience, though without even the user traction you have. The doubts, going to sleep wondering whether it's worth it, feeling like you're wasting your time one day and like you're doing the most important thing in the world the next. I think your first step should be getting back in touch with the people close to you. Do you have a cofounder, or someone helping you? If not, I'm open to lend a hand. Not looking for compensation, prioritizing meaningful work and opportunities.