Ben, remember the old days where I used to buy you cheap wrist watches so you'd have some idea of the time? :) Now that I'm using a cel phone, I've stopped wearing a watch... which is the case with many people, I think. Our society has moved back to pocket watches, essentially. Kinda funny how advancing technology can bring back old paradigms. I wanted what kind of advance would bring back men's hats?
Anyway, regarding the topic at hand, my problem is usually starting art projects... I have huge momentum so once I get into an artwork I move right along, but it's hard to get the wheels moving (or to know when to stop). My trick for the beginning procrastination period is to set myself up so that my procrastination is actually pretty productive (i.e., I work on back-burner projects, deal with needs-to-be-done-at-some-point day job work, etc.). The hope is that when I eventually get rolling, my procrastinations have actually freed up more time for the focused work.
I don't usually have much guilt over not working on projects (because I'm pretty good at doing so, I guess)... what I feel guilty about is not going to art exhibits or art openings. This has been magnified now that I'm in NYC because I haven't really increased the amount of time I spend looking at art or networking at events, but the amount of art viewing & networking opportunities has increased dramatically.