Time

I'm feeling kind of strange about time right now. In one sense, I want the time between now and Friday afternoon to stretch to become what I need to pack up all my stuff, clean my apartment, and study enough not to fail my neuroscience test. But I also want the time to shrink to nothing so I can get to nesting in my new apartment and enjoying spring break. And I'm having loads of trouble using my time wisely. Even when I sit down with a book and my trusty highlighters, my mind wanders away for the next 2 hours until I suddenly realize that the page hasn't turned and there's purple ink all over my hand. Why does my brain work in spurts like this? I can work hard and do stuff right for maybe a week or two, but then I can't motivate myself or think straight for a month. I don't understand.
I do the exact same thing with schoolwork, fitness, cleaning, prayer, everything. I'll be going just fine, feeling okay about everything, doing what I'm supposed to do, then suddenly the routine will go off-balance. When that happens, I'm all overcome with guilt and laziness and I can't bring myself to try to re-balance it until a long enough period of time has passed to subconsciously warrant some kind of "new beginning." I know that this isn't a healthy way to do things, but I have no idea how to change it.