Answer the question asked, not a story you want to tell. Give your main point first, then add details after. One person's mistake: they rambled so much they forgot what they were answering.
Chapters
make sure you answer the interview question. I've definitely made the mistake of really just rambling on and on about my life story and not really getting to the point with the question the interviewer asked, to the point where near the end of my rambling I end up asking, "Wait, what was the question?" because I just got so sidetracked with talking about everything but the actual question. So as much as it's fun talking about yourself and as much as you want to give as much detail as you can, just answer the interview question. That's all they really want to hear. You can, you know, give additional information at the end, but answer the interview question.