We all have dreams. Some will take us out of our comfort zone and will require sacrifice and effort. If they are important to us we will use our most precious commodity; Time to achieve them. You heard me. Our most precious commodity is time and I for one want to be selfish as I can with it. For me that means using it to make my
contribution to myself first then my family, my friends, my community and the world I inhabit.
In my earlier days as an author I'd have friends and family be presumptuous enough to want to plan my time for me and I'd let them. Wo betide anyone trying to tell them you won't be involved in the day trip or the cinema or the concert.  What could be more important than that they say?
Duh! My goals and aspirations.
Some would understand but most wouldn't.
Putting yourself first is not a negative thing, its your job to take care of yourself and go out and achieve your goals.
The Arline industry has it right. In the case of an emergency fit your own oxygen mask first before helping your family into theirs. You can't help others if your unconscious or dead.
Focus on self first because if you are not right with the world you cannot do
justice to the people who depend on you.