"... Can't help thinking about tomorrow ..."

    The Discrimination Engine principle would have those of us in "overload mode" consider the difference between what is labled "urgent" (usually by others, for us) and that which is labled "important" (which we should be able to do for ourselves).   The fact is that it is usually superiors who force us into overload by cramming our days with they designate as "urgent" when, in fact, most of those urgent things characteristically have no significant importance ... they are just things the superior doesn't want to do and can fob off on someone lower.

     If you can keep the list of objectively important things clearly in mind, then you have an option for the Fobber (if you are the Fobbee):  "I would love to do your Fobbogenic Task, but I will have to stop what I am doing for the Big Fobboblastic Boss (to whom you answer) to do what you are asking.  If you think that would be OK, then just let me know and I'll get right on it."  

  (The rest of the unspoken dialogue you should have only with yourself and not the Fobber:  "Otherwise, go pound sand, quit trying to fob this kind of crap off on me, and go do it yourself !!")