I got a project assigned in September and it was due in May. I did it the night before it was due. So like 8 months? :P
My whole life? Well, um, I once had the whole semester to do a social studies project about the holocaust and I waited until the night before to do it.... at 11 PM.... yeah....
I had an assignment to write a small book last September for extra points or something. I still haven't done it yet.