When answering this question, you can talk about your attitude towards time management and personal habits. You might mention that if you realize something is a waste of time, you would probably try to stop or reduce doing it, because you want to use your time more efficiently. However, you could also mention that sometimes people continue certain activities even if they know it’s not productive, maybe because it’s relaxing, fun, or just a habit. Giving a personal example can make your answer more convincing and natural.