If there is no cure, you must endure.
Resolve to be among the top 20% of salespeople who make 80% of the sales.
Issue a blanket pardon. Forgive everyone who has ever hurt you in any way. Forgiveness is a perfectly selfish act. It sets you free from the past.
Your most vauluable asset can be your willingness to persist longer than anyone else.
Follow up and follow through until the task is completed, the prize won.
The key to success is for you to make a habit throughout your life of doing the things you fear.