Hostility - If you are disappointed because life doesn't give you what you want or think you deserve procrastination becomes the means of rebellion. It's not fair - If you really expect that all of your classes, teachers, and assignments will be fair, you will have plenty of excuses for procrastinating. They assume that someone will recognize the unfairness of their situation and will rescue them. They wait and are surprised when nobody comes to their rescue. They think that the powers that be will recognize the injustice and set it right.
Some people waste their whole lives waiting for justice.
They die angry and self-righteous. They would have accomplished a lot, just as soon as everybody else decided to be fair. Nobody knows how tough my life has been - If you really expect others to know or care about your past difficulties in order for you to do the work, you will have thousands of wonderful, angry excuses for procrastinating. Lose yourself in books, magazines, TV, movies, music, entertainment, etc.