He was too anxious.
He could not read human nature.
He did not know how to approach his prospect.
There was not a real man back of the solicitor.
He scattered too much; could not concentrate his talk.
He knew enough, but could not tell it in an interesting way.
He tired the prospect out before he got down to business, and could not see when he was boring him.
He went to his prospective customer in the spirit of “I will try” instead of “I will.”
He could not take a rebuff good-naturedly.