OK, here's an interesting anecdote (true story) about cold calling:
There was a young man, looking to break out of his low-income lifestyle. He was very bright, but naive and poorly educated. In the early 80's, he discovered the lure of selling penny stocks because it offered "big" financial opportunities, appeared professional, and required little education--only to be able to pass the licensing test.
This man did not have "salesman" bone in his body. His firm pumped their new agents up with a giant hype about making millions in the market and set 'em loose on the phones. He did what he was told and cold-called. (knowing this man, as I do, I cannot imagine that he lasted much more than a couple days--if that--at cold calling.")
He struck up a friendship with one of his propects from those few days of cold-calling. Shortly thereafter, he discovered what was really going on at his firm--which was a complete scam--and immediately extracted himself from it.
He stayed in touch with the friend he had made through the cold call. His friend had a sister in FL and decided to move there. He decided to join them, and a year later, he married his friend's sister.
Now, 18 years later, that man has NEVER made another cold call since, but he got more than his money's worth out of the day or two of genuine effort. 