A behavior pattern kept dragging down my execution for months — and I couldn't see it while I was in it

Solo founder here, building alone, no team.
I just caught myself doing the thing I always do. The plan was simple: get my landing pages live and put them in front of real people. The pages were done. The only thing left was to ship and share.
Instead I sank hours into setting up a payment processor I didn't even need yet — building the product, configuring checkout, grinding through compliance and KYC — until it hit a dead end I couldn't have solved anyway. Hours gone. Zero strangers saw my product.
The part that gets me: every step felt necessary. It wasn't obvious procrastination. It was a chain of reasonable-looking infrastructure work that quietly ate the time I was supposed to spend on the one scary thing — finding out whether anyone actually wants what I'm building.
And as a solo founder, there's no teammate to say "that's not the job right now — go ship." I'd literally written myself a note to watch for this exact pattern, and still walked straight into it.
So I stopped, and I'm finally doing the thing: I'm building Lumen — a journaling app that quietly accumulates a picture of you over time. When you tend to get anxious, when you're most driven, which problems keep resurfacing, where you keep getting stuck, when you do your best work. It surfaces the patterns you can't catch yourself, because they only show up across time, not in any single day. Early access is here if you want to look: lumen-a.pages.dev
My real question for the solo builders here:
Is there a recurring behavior pattern that you've noticed keeps showing up and dragging down your execution or focus — and how did you eventually deal with it?
I'm trying to understand two things: whether this "the pattern repeats but you can't see it from inside" problem is common for solo builders — and for those who actually broke out of it, what made you finally see it. A tool, a habit, or just getting burned hard enough.