Your prospect buy your confidence first.
Your prospect won’t buy from you if he is confident that you are not quite sold on your offer. Watch your attitude about your product or service. You cannot hide it.
You will worry about any objection from the prospect if you are sold on your product or service. You will see every objection as an opportunity to educate your prospect. Your education of him, your confidence in giving it to him, will help him buy.
Do you believe in your offer?