"Over the course of my career, consistent feedback that I've received from both colleagues and on my performance reviews includes my organizational skills, my ability to remain professional and focused in any situation, and my overall ambition to achieve high success. On top of this, the colleagues I collaborate with on a daily basis wouldn't hesitate to say that I'm just all-around fun to work with. I can make the most of difficult situations with my positive attitude and outlook on things."

Do some research on the personality traits that are most common among successful pharmaceutical sales reps. Some common themes include being ambitious, confident, self-motivated, and energetic. As you answer a question like this on how your prior colleagues would describe, try to work some of these keywords into your discussion. If you provided formal references to your interviewer, they will likely follow up with them. Be sure to be upfront about direct feedback that you've received from your colleagues.