One writing project leads to another

I'm using the OpenOffice.org 2.x Writer Guide as source material for much of my new book on self-publishing, reorganising parts of it and adding new material more specific to my target audience. Parts of the Writer Guide have not been updated in over a year, so I'm finding lots of little (and not so little) mistakes, including info that became obsolete some time ago but was never spotted and updated. Since I'm updating that info for my own book, I feel obligated to update the Writer Guide itself (both the source files and, in some cases, the wiki version) as I go. I'm also referring to the new edition of the Draw Guide (which has been translated from German and not fully edited and published yet) for tips to help me create some graphics for my new book. Of course I'm spotting editorial corrections needed for the Draw Guide, and distracting myself from my main task by making those corrections. None of these are very onerous tasks, but they do mean that one writing project spawns several others, all of which take some time. It's amazing how a day can disappear on what started out as a small, apparently simple, task.