Is anyone else building something but constantly feeling like they’re “behind”?

I’m working on a startup right now and from the outside it probably looks like I’m doing fine, but internally it feels like I’m always late to something

late to trends
late to execution

and I can’t tell if that feeling is actually useful (like pushing me to move faster) or if it’s just messing with my ability to focus

for people who’ve been through this, does that ever go away? or do you just learn how to work with it??