Procrastination can hurt you because, when you wait until the last minute to do something most of the time it is not your best work. Also, when you procrastinate a lot it becomes a habit. This can result in you forgetting to do things and not getting them done at all or not fully completing something due to lack of time. When you are known as procrastinator people may see you as unreliable and lazy which is not a good reputation to have.