If you going out on a “private assignment”, like you are traveling somewhere in case of shooting something you have in mind or while being on a time schedule, you are likely to miss something what is even more interesting or spectacular. I myself have been on the “hunt” for this years Perigee Moon for four days and only got a decent view on him once. To be honest, I´ve been to fixed on the Moon and almost overlooked the beauty that´s been all around while the Moon did not show up.
But only almost; I´ve heard that quote a couple of times: Turn around, look what is behind you! Just a reminder on what you could miss if you are fixed to just one direction. Like Dewitt Jones said: Be open to the possibilities!