Job interviews can be stressful, even if you have gone on lots of them. The best way to interview as painlessly as possible is to take some time to review common interview questions and sample answers.
There's no need to memorize responses, because you don't want to sound canned, but do take some time to think about what you'll say, so you're not fumbling for an answer during the interview.
Answering questions like this can be hard, so it's good to take a look at advice on how to answer before you go on an interview.
Do you have a really good answer, or two, that you'd like to include on our lists of interview questions and answers? Take a look at more difficult interview answers and add your interview question to the lists of best interview answers.