Provide an example that centers on the struggle you faced, and how you overcame it, even if you didn't succeed to the degree you had hoped. Explain the situation and what variables hindered your progress. Detail what you would've done differently and how you avoided repeating it. What's important are the lessons learned and how they contributed to greater success.

"I was spearheading two separate projects and took on a third, convinced I could deliver all three of them on time. This third project was very involved, more so than I expected, and it slowed me down. The deadline approached. The first two projects were close to being done, but the third was only halfway there. I realized I was going to either miss all three deadlines, or just one if I abandoned the third project and re-prioritized the first two. So I passed off the third project to someone else, breaking down all the progress I made and where they'd pick up on it. I thought I could do anything. But I realized it was better to do a few things well as opposed to producing more at a lower quality of work. It's important for one to know their own limits."