Procrastination can be very expensive. For example, when you wait at the last minute to start a project at work, you will end up stressed, quick-tempered and sick. Constant negative excitement is not healthy. You are apt also to make mistakes and get careless. Remember, it's very difficult to do a good job and be nice to your co-workers when you are in a hurry. You are apt to make mistakes and get careless. Procrastination can cost you your job.