Authenticity cripples objection, but is only achievable when selling something that first elicits virtue.
Copy may then begin to throb with the pulse of everything that has ever mattered to anyone who has ever cared about mattering.
Oh: also, I have no idea how to sell my services. Never done any Copy for anyone. Just recently introduced to the medium.
There's a chance that I know nothing about the art of selling with words. I've got a feeling, though.