The document outlines 10 common mistakes people make during job interviews according to Dave Sanford from Winter, Wyman. The mistakes are: not being prepared, not knowing yourself, talking too much and saying too little, focusing on the past, not listening, being too humble, stepping out of "sell mode" too early, having low energy or passion, not being realistic, and not asking for the job. For each mistake, the document provides an explanation of the mistake and a tip to avoid making it.