My procastination is usually due to a stupid case of OCD. I say it's stupid, because I can see how blatantly counter-productive it is... and yet, it's still there.
I keep my OCD down to "mild" levels by purposely flinging my socks as soon as I come home. This, in a way, breaks the cycle of "can't get down to do this because everything isn't perfectly clean". Ordinarily, something becomes a source of discontent that keeps me from getting things done and the best way (that works for me, YMMV) is a hot shower after a bit of excercise, LOTS of coffee followed by soothing music. "Soothing" in my context is usually Testament or Slayer, but you get the idea.
I also make it harder on myself to get distracted by turning off the ringer on my phone or taking out the battery to make Twitter et al. harder to get to (I don't remember my Twitter password, so I'd have to go into my "mega-list-of-all-passwords" text file which is PGP encrypted).