If you have to separate your work from the fun stuff you've probably made the wrong career choice

But to the OP, yes action lists are generally never ending, thats normal, what I do to combat this, or at least to make me feel better, is to plan my action list for the day the night before and get busy knocking those tasks out the following day and if I finish those tasks with time and energy spare I will go to my next list for something else to do but if I lack time or energy I am done anyway.