Me personally? I never had that fear. I launched many things, and like with everybody else who launches things, most of them failed.

If you find yourself unable to launch stuff because of that specific fear, then I would say it has some extremely personal reasoning behind it, and maybe introspection would be helpful. Things that deeply ingrained are usually related to childhood and or family.

Ironically, I'd probably suggest some psychedelics as the fastest way to get to the bottom of it.