an old saying "don't wait until tomorrow what you can do today" has a point! seriously. why???!!! why 80% of the people that's in my life are the exact opposite of this old saying.
a little tip from me, by doing what you can do today: you save yourself from getting stress out near deadlines, you save people for getting pissed at you for postponing everything (especially when the postponing not only affecting yourself but also another (read: me) that's already prepared, you get the clearer idea of what you should and can do.
i myself is a dead-liner. but dead-liner with limit. and by limit, that means not to postpone important stuff (dead or alive matter) until the very last minute or worse SECOND!