We may chose how to wake up in the morning, but we can not chose whether the sun rises without clouds in the same moment. Great things only happen when we can not chose the whole circumstances. Still, we can chose our self-conscious within those circumstances.
We can not chose the accidentally bird pops above our head, but we can always find a freedom in how to react, whether we would get angry, or we would smile happy. Yes, accidentally may bring great things, since we can not chose it.
Time is such precious journey, make great things from each small thing that happened beyond our control. Never attached, and you would be a great act of creativity.