I know in our situation right,it is so difficult to focus on one thing because you kept on thinking of so many things. Well, that is really normal but you should not stop there and let go of other important things. I know how difficult it is but doesn't mean it's impossible. You  can still focus by doing things that will help you finish your task in a day. But do it with a smile and love so that you will have your drive to get going and accomplish you tash with a happy heart.