With a modicum of modesty, here’s an opportunity to toot your own horn about your successes on the job. If asked this question you have the chance to offer a “humble brag” about something exceptional that happened on the job for which you rightfully take ownership and may have received acclaim or credit. Tell your interviewer a brief anecdote about one of those rare days when everything went right; like when you completed a project early and under budget, and the bosses loved your work. Or, you scored a big contract with a new client that increased profits near-term and demonstrated long-term revenue potential. Describe when you felt a real sense of pride of accomplishment and appreciation from coworkers and supervisors for your efforts. However, if your work history is short, you haven’t worked in a long time, or maybe don’t have a track record of major achievement on the job, you could respond by saying something like, “My bus/train/taxi arrived quickly, I got to work on time, ready to meet the challenges of the day. If it all comes together, today could certainly be one of my best days.” This conveys your optimism, positive attitude and willingness to hit the ground running. However, I would discourage saying, “If you hire me, it will be my best day,” or anything like that because – let’s be real – your interviewer is not responsible for the quality of your day. That’s up to you! But with a little preparation it very well could be your best day.