Same here, always putting things off until the last minute.
I took a self help coarse and it was life altering.
"getting things done fast" by David Allen, I believe. It was life changing. He focuses on what he calls "working from zero base". What that means in short, is that he uses a system so that you literally have nothing on the brain, you have all your thoughts and tasks organized easily each and everyday. This gives you a serious sense of freedom from the cluttered brain effect. Helped me sleep better too, going to bed knowing you have everything taken care of and not having to sit there thinking about all the things you have to do or have not done.
Great coarse on tape, I suggest it. I tend to stray from the routine, and have to re listen to it every few months though

. He is very motivating to listen too.
0ldsoul