Priorities

Which do I choose?
Finishing up a chapter of my book, or going with a stressed-out friend for moral support as she discusses surgical options with her doctor?
Of course, I chose the friend.
But what about picking up my mother-in-law from the airport or finishing the chapter?
Spending scarce time with my usually-on-the-road husband or finishing the chapter?
Solving a mini-crisis for my mother or finishing the chapter?
Dealing with yet another detail following my brother's death or finishing the chapter?
Sometimes I feel like it's all too much, these demands. Other times I feel like I'm using them mainly to help me avoid writing.
Which is it? Good girl who can't say no? Or lazy author looking for an excuse?
Priorities.
I'll let you know when I figure out what mine are.