Most people almost never go out of their comfort zone. This may be the way to live your life as an employee, yet not as a business owner.
Your commitment as a business owner (I hope you are commited) means that you also commit to live outside your comfort zone most of your waking hours.
People who don't get this will have serious challenges (a.k.a problems) with marketing and sales.
So don't expect anything else. Accept the challenge, go out there today and start presenting your service to new people.
Good luck.