I believe it was about letting things go.
I was sitting at the airport having missed my flight because I helped a friend and was late for the flight. It was frustrating, the tiredness and the disappointment, the wasted money, all mixed, i was yelling on the phone to my mom for no reason, and then she told me "If it's not meant for you, it would never be yours, and if it's meant for you it will never be someone else's."
I cooled down a bit after that. Thinking about it again, there's things that you couldn't do and just had to let go.
My apologies if I made any error(s). English is not my first language. Hope my story helps, and have a nice day.