I know you like things to be perfect and not lacking anything.
You often feel this way when you want to send that email, or are just about to submit that proposal. Have you also observed that this attitude is the reason why you are not getting much done? The English dictionary calls it, Atelophobia: the fear of imperfection. The fear of never being good enough.
Just so you know, you cannot edit a blank sheet. You can only improve on what you have started.
The thing is, the quest for excellence in itself is good but it is the idea of perfection that is bad because perfection will always be outside our reach.
Stop sabotaging yourself.
Just ship the work and allow the conversation to begin.