“I recently heard that the number one mistake salespeople make, is they talk too much. I believe this transmutes into selling ourselves too.”

Who said it, and where.

Who said “I recently heard that the number one mistake salespeople make, is they talk too much. I…”? Isaac Mashman said it in his essay "The Benefits of Being Able to Say “Google Me.”", Executive Thoughts, November 1, 2023, first published on Medium.