Recently I had the privilege of helping teach a coaching course at my university institution to eighty students, most of which had never coached before. Not only was it (hopefully) a valuable learning experience for the students, it was also a great learning experience for me and my development as a coach. Across the course, the students adapted well to the teaching methods of the course. However, a few common mistakes could be found in nearly every single session that the students delivered. As a result, I have developed this list of the most common mistakes coaches (not just beginners) often make. This list should be a helpful reminder to all coaches on how to be better in their roles and ensure participants get the most out of their experience.