I spend time making my perfectionist vision very clear. Diagrams, written descriptions, etc of what my perfectionist design would be for a given project. So I

I spend time making my perfectionist vision very clear. Diagrams, written descriptions, etc of what my perfectionist design would be for a given project. So I’m confident I know in detail what it would take. That scratches a lot of the itch. Then I say “What could I do in X weeks that I can actually ship and that is a real step toward the first Y % of my perfect vision” and I execute on that. I make sure that I am actually building part of my perfectionist vision, not some hacky garbage, but just limited in scope to be achievable in limited time. Inevitably, along the way I realise my perfect was mostly wrong so this is an iterative process. I refine and repeat. But your perfectionism is not wrong - use it to your advantage! Just make sure you are also a perfectionist about actually executing your ideas and shipping something.