When you are preparing for an exam, there might be other activities seeming more tempting and fun than diving into your studies. For that reason, it is important to remember that the available time to prepare for a test or an exam is time you can’t get back. It hurts and is extremely annoying to feel you could have done better if you had only made a greater effort. You will never get the chance to go back and do your preparations all over again in the same term/semester, so you might as well do your best right now.