I think I'm best described as somewhere in between. I do try and get things done, but I am also fairly easily distracted. When I set myself to a task, I am usually pretty good as focusing on it when I don't worry about people or other stuff breaking my concentration, but conversely if I'm trying to do something and I just can't seem to get into it, there's not much hope of me getting anything accomplished.
For instance, I'll while away the others playing a video game when I'm supposed to cleaning the house. But even worse, I might start playing a video game, get to the start screen (or somewhere else) and then leave it alone/paused for hours while I talk to friends or watch videos here and at YouTube.
Case in point, I started playing Homefront cause a friend lent it to me. I finished the first stage, went back to get some achievementns/practice playing.. and during my second go through the chapter I ended up pausing to look something up online. That was about 4 hours ago, and I'm still sitting here online with the game paused.