Solo founders, who do you actually ask before deciding something?

I've spent so much time deciding things that I think in a normal company would a meeting or email and resolve in 30 minutes. E.g. what to build next, whether a feature is worth it. Or whether the thing I've been working at for the past few week is actually good or am I blind to it.

I could ask friends and family I wonder if they understand the product like i do, so I end up asking chatgpt, etc or posting it something or just moving on. I mean the picking up and moving on has it's pros and cons.

I'm curious, I noticed a lot of founders here who do you ask before deciding something? Thanks, appreciate it.