In terms of putting things off, I tend to put things off if the task is too overwhelming. If I don't understand the task or if I can't seem to break it up into manageable chunks, I procrastinate.

Oh, same here, definitely. This is one of my biggest struggles, especially at work! One of the things that I've found works best for me is when I find myself doing that, I open up a Word document and start writing instructions for how I would tell someone else to do the project. Nine times out of ten, this works like a charm to help get me started on something, to organize it into chunks I can handle, or at least to pick a direction to focus on.