Way more productive, I think, to push yourself to be more in the world, not to encourage yourself to hide.
Taking delight in the journey takes confidence. It pushes the envelope of design.
The combination of passion and art is what makes someone a linchpin.
People get good gigs because they stand up....You don't get picked. Reject the tyranny of picked. Pick yourself.
Not adding value is the same as taking it away.
Just imagine how much you'd get done if you stopped actively sabotaging your own work.