Procrastination isn't lazyness or anything it's fear. It happens when you fear what's coming and start thinking you can't do it your mind tries to avoid thinking about it and distruct itself withother things. Like if you have a week for an exam you think a week isn't enough and you think of failing then you get anxious and try to avoid thinking about it by doing other stuff. So the best way to avoid procrastination is telling yourself that you can do it you can study and ace the exam instead of thinking the possibly of not finishing in time