If you have Attention Deficit Disorder (ADHD), are really busy, are somewhat overwhelmed, or are just trying to understand where the time goes, go read this posting on A Certain Lack of Focus. The writer, who is ADHD, is working on a novel, finishing a degree program, and considering the 400 other ideas that ramble through any ADHD brain in a given hour. Not only that, she's come up with a concrete method for staying on track.
The quick description: Start with a box with pull-out drawers. Label each drawer with the name of a project. The center drawer gets labeled TIME. Fill the Time drawer with buttons. Each time you spend an hour on a project, move a button from the Time box to the other project's box. At the end of a day (week, month, lifetime, depending on how big a box you started with, you'll have a visual record of how you spent your time.
Personally, I'd be better off if I also included drawers for the non-work functions, that whole sleepingeatingwalkinggoofingoff part of life that's supposed to balance out hyper-focused getting-stuff-done mode.
My description doesn't do her project justice. Allow yourself a look at her description and excellent photos.