tl;dr of my comment and of the whole article: a) think of the 3-5 best things you've done recently at work b) practice describing them to a friend (you don't

tl;dr of my comment and of the whole article: a) think of the 3-5 best things you've done recently at work b) practice describing them to a friend (you don't work with) the way you'd tell any other personal anecdote c) When asked a behavioral "Tell me about a time when" question, instead of trying to comb through your memory of the thousands of experiences you've had at work, just ask yourself which of your 3-5 stories is closest, and tell it d) if that feels dishonest (and it does to a lot of people!) remember that the whole point of an interview is for you to tell them how great you are. If they knew you had led the effort to fix the critical-but-brittle X service, they would've asked you. They asked a vague open-ended question to give you the latitude to answer however you see fit.