I wish to state that my exposure to a certain area was a mere coincidence, and I am happy about the area. Moreover, I want to convey the idea that the incident was like a fairytale, something no one would easily believe, but because of it I ended up where I am. The same incident happening to someone else might go unnoticed but it rang the bells for me.
Stating this idea as above is too long and boring, and such language seems childish or out-of-place in a statement of purpose. I want to make it succinct. Is there any word or phrase that conveys the same idea?