When the unexpected happens, you always have your inner core strength which cannot be taken from you.
The ability to accept what is happening and let go of your original expectations is key when dealing with these unexpected turns of fate. We have a tendency to get stuck in our heads, clinging to an idea of how we think life should go, and we can have a hard time accepting anything that doesn't comply with that idea. The fact is that life is unpredictable. The trip you thought was for business -- and when the deal fell through, you got depressed -- actually landed you at the airport two days earlier than planned so you could meet the love of your life. Your car breaks down, and you are late for an appointment. While it's true that you never arrive at that important meeting, you end up spending a few relaxing hours with people you would never have met otherwise.
In order to keep us awake to opportunity and to teach us equanimity, the universe throws us the occasional curveball. Remember that curve balls are not only life's way of keeping us awake, which is a gift in and of itself; they are also often life's way of bringing us wonderful surprises. Next time a curve ball comes your way, take a deep breath, say thank you, and open your mind to a new opportunity.