The interviewer would like to know you on a more personal level. There is no right or wrong answer but if you are able, keep your answer career or school related. Be sure to express any challenges that you overcame to reach this proud day, and discuss what it took to get you there. You can then let the interviewer know that you will have the same excitement and tenacity towards your goals while working for their organization.
"The proudest day of my life was when I gained promotion to the senior accountant role after just 12 months with my current company. I worked hard to get there putting in overtime hours, taking additional coursework, and managing a team of two interns. I take my career path seriously and will apply myself every step of the way."
"The proudest day of my life was when I graduated from university, with honors. I am the first person in my immediate family to complete post-secondary education. My whole family came to cheer me on! This accomplishment came from tough work, and endless studying - but, I did it!"
"The day that I landed my first management role, with my own team to lead, is hands down the proudest day of my life. I have always been a leader, even without the title, and I knew that a formal leadership role was precisely where I wanted my career to go. I enjoy coaching others and helping them succeed."
"To this day, the proudest day of my life was my first official day of work after completing my degree in marketing. I worked very hard to complete my education and land a good job. I remember the feeling of accomplishment and excitement, walking into my office for the first time."
"I graduated high school with honors and was valedictorian. This day was an exciting one for me because of the hard work I put in for all four years but also because I knew the accomplishment would look excellent on my resume."
"I am a competitive salesperson, so any big close or significant client win is always a fine time for me. The proudest day I have had so far was when I closed a $2.5M contract with one of the biggest concrete manufacturers in our city. My employer was beyond thrilled as this was the largest contract our company closed in nearly five years. I look forward to bringing big results to your organization as well."
"The proudest day of my career was when I helped a struggling student graduate. It always feels wonderful to help others to succeed, and this particular student had many challenges. I am dedicated to my students and their success."