Choose a weakness that will not be a red flag for the interviewer. You want to be honest without giving the impression you are a bad fit for the job. Focus on either how the weakness can also be a strength or on what you have done and are continuing to do to improve the weakness.

"My biggest weakness is my inability to say no. I have a habit of taking on too much in an effort to help others. It makes me a great team player and support person for my coworkers but it can also result in extra hours at the office, feeling overwhelmed, or worst case, missing deadlines. I've only ever missed one deadline, but it was a huge lesson for me and I knew at that moment I had to make changes. One change I've made is when a coworker asks me for help with a project, I will now ask if they'd like to swap work instead of me just taking on more. We can often collaborate to find a task from my desk they are more efficient at than me, which frees up my time to tackle their project. With a little shuffle of work, we can both take on what we are best at and get everything done on time without feeling like it was too much."