This is almost exactly what I tell my younger folks who are concerned they're not authoritative enough to share an opinion or lead a project. I cured my Imposter Syndrome not by gaining confidence but realizing that everyone else was just guessing too. My guesses were at least as good as theirs.
My version was more general: I'm in a race with people convinced they cant win.
After that realization even a tiny amount of effort put me miles ahead. Again and again I found situations screaming: This is where others would give up.
You shouldn't be satisfied with guesses as good as the self proclaimed imposters. Your effort should further convince them they are!
