This question is asked to know about your shortcomings. It is a very common question. You should also mention the ways by which you can deal with these shortcomings. This will also help the interviewer understand the areas where you require training and will also show your level of acceptance.

Accept the fact that no one is perfect in this world. It is not necessary that you will achieve success always. Every person meets failure at one point in their life. Some people might have pointed out your shortage of success a number of times. Success and failure are parts of our career and life. So do not underestimate yourself in case you meet a failure.