Most of the time, when I'm working on my own, I miss the feeling I'm not alone in the difficult moments, especially when I'm stagnating or the results tend to decline.
When you have a co-founder, it's a little better.
Maybe there are support groups for solo-founders (like build in public)
Or there are meetups, online networking/calls, where you get advice.
Or do you solve it with a partial "step back"
Where do you look for support and redirection? (Personally, I wouldn't want to slip into talking to ChatGPT.) :D