Anytime you improve your business, you face change. Change is uncomfortable, messy and unknown. It's easy to be fearful. If you sit in your fear, you'll focus on the old.
But the way to succeed is to remove your eyes from the fear and move them to focus on building the new. Even if it's scary, put one foot in front of the other and build the new. Just the steps forwards are rewarding in and of themselves. Try it. Build the new.