It's wrong to put things off until the last minute.
Tim had a big exam next week that will determine if he will pass the class.
Tim wants to study for the exam.
Tim does plenty of studying the week before the exam in order to be ready.
Tim only studies for the exam an hour before the class starts.
Tim aces the exam, and his teach congratulates him for doing so well.
Tim does poorly on the exam and ends up failing the class.