We all have things that make us feel afraid from time to time. Recognizing them is the first step in overcoming them. This question is an opportunity for the interviewer to get to know you on a personal level. Being willing to talk openly to someone about things like this shows your softer side, which is important when you are trying to build a good rapport during an interview.
"My greatest fear about being a doctor is that I am not learning and Growing fast enough to save more people. I know that we can't heal or save everyone, but as a doctor, I want to give everything that I can to those who trust me with their care."
"I think we all fear something on one level or another. For me, I fear that I may miss something when I am treating a patient. We all have a main objective to find the source of a problem and treat our patients with care. I always want to go home at the end of my day knowing that I gave everything I could to improve the life of someone else."
"Honestly, there is not a day that goes by that something doesn't cross my mind and I wonder if I could have done more or taken a different approach to the type of care for a patient. Of course, I give all I have and am very dedicated to my patients. I guess part of what keeps us going and makes us better is the fear of being inadequate."