Whether it was with a patient or a colleague, the chances are high that you've had to work closely with a difficult person in the past. With a question like this, your interviewer is looking to gauge your ability to work with someone difficult healthily and effectively. Because working with stressed patients and colleagues can be commonplace at Adventist Health, proving your ability to do this is vital. Show the interviewer that you work well with most personalities even though you recognize some folks out there who are quite difficult to please. Before your interview, think about that one person at work who was hard to please. Perhaps there is someone at work who tries to intimidate others. Talk to the interviewer about what made this person challenging and what their relationship was with you. Avoid speaking poorly of anyone, and be sure to end your response on a positive note.