You have to be honest and tell them your personal strengths and weaknesses. Only you and those who know you, can help you with this information. There are online resources with information about handling interview questions. The main point is to give specific examples - look up "STAR" strategy. If you are going to have an important job interview in English, then you can practise likely questions and answers with an Italki teacher / tutor. I have done this with two students recently and they both got the job.