I know the feeling.* A phrase I've been using for a while is
   "Time Suck".* Some people are timesucks.* They steal away time -
   for me, time is the most important thing I need, money second.*
   And I want to be nice, so I'm nice.* But a big part of me wants
   to say, 'Oh just go away for a few hours!". One thing that's
   helped me (I've been on a project with uncertain goal or outcome
   for about a year and a half now) - has been asking myself this
   question: "Who am I serving right now?" For me, I'm serving
   whoever I'm talking to at the moment, or spending time with.*
   Like right now, "Who am I serving?" I'm serving Matt Fenimore.*
   Perhaps later on,* I'll be responding to someone else about
   something else and then that's who I'm serving.* Or a family
   member comes by and demands my attention and I give it; I'm
   serving them. That way I can dedicate that time to them without
   worry because I know at some point in the day, I'll be able to
   say, "I'm serving me" or "I'm serving future me".* Stuff like
   that.* I don't know if this helps in your situation... but I
   know the feeling of being unable to maintain focus while people
   are constantly providing themselves and their needs as continual
   distractions.