With responses like the ones above

With responses like the ones above, you’re pointing out “failures” that are little more than minor disappointments. You’ll also notice that you’re actually calling attention to some good qualities like diligence, persistence, willingness to try something new, or even excellence. This approach works well since this is only a stress question to test your reaction.

If you have good rapport with the interviewer and can see that he or she has a good sense of humor, you might give it a lighter touch:

ANSWER: I suppose my greatest failure was not being able to take those three strokes off my golf game. [laughs]
ANSWER: I think . . . not being able to make a perfect soufflé. [chuckles]

One stress question that you are most likely to get in almost every interview is the following:

QUESTION: What is your greatest weakness? Do not tell your greatest weakness! How do you think it would sound to say, “I’m really a slob” or “I have 27 unpaid parking tickets” or, worse still, “I am always late for work and I usually leave early”? Let’s take those weaknesses (which of course you don’t have) and leave them outside the interviewer’s door.

Taken from : Fearless Interviewing - How To Win The Job