The moment you energize a goal with focus it will be as if the train you're riding instantly switches to a new set of tracks going in exactly the right direction at high rate of speed. We're all vulnerable it is easy to lose focus. Accept the fact that you must repeatedly recover your focus. A brief loss of focus is a minor derailment, but, if not regained rapidly, loss of focus becomes a wholesale wreck. Focus, readjust, and realign.
Every opportunity competes for time and focus.
You can't do everything, but you can do one thing and stay with it until completion. Guard your focus jealously. Determine not to be distracted. Goose your focus everyday through constant care, feeding, and attention. You will receive no sympathy in the marketplace for loss of focus.