The biggest pressures you can feel on your shoulders are likely to be those you have maintained there yourself: for example to be excellent in your job, to be a great father or a cool wife, to please other people, to live healthily, to stay calm no matter what your mother says, to get things done fast, to think positively, to be strong.
First of all, why do you want to change your procrastination* tendency? Putting your demanding tasks off and doing something else is more fun, isn´t it?
Apart from that, research has been suggesting that procrastination reduces with age. Wouldn´t this be enough to leave the topic for now and wait till you age enough to go and do your tasks?
If you want to do something about your procrastination now, then this article might be for you.