"Life can be a bit of a rollercoaster - it's up and down, it's laughter and screaming. One minute you want to puke and the next you feel like you're flying.
You don't get to see around the corner, you don't get to experience it ahead of time, but you do get to choose whether you take that ride. And you don't need to ride alone.
I stood in the queue for a good few years before I worked that one out.