This question helps an interviewer separate the candidates who are forthright and honest from those who provide answers they think the interviewer wants to hear. Being able to admit to your own mistakes, to those detours in your career, and do so with emotional intelligence can go a long way here. Describe what you did to correct course and showcase that you're willing to take calculated risks, risk failure to accelerate success, and take the lessons you learned from your failures to shore up your future success. Exemplify that you are motivated, ambitious, have a can-do attitude, and proactively aim to grow in your career.