Half of what feels like a concentration problem is a definition problem. Sorting out the car is not an action; it is a category, and nobody has ever sat down and done a category.
Phoning the garage at nine is an action. It gets started, and usually finished, because the body knows what to do with it. Most of the jobs that have followed you around for a month are still there because nobody ever converted them into a first physical move: a call, a search, an envelope opened.