"once in a while we get shown the light in the darkest of places..."
and once in a while out of nothing comes something.
just when you think you finally have it all down, a wind comes sweeping through and knocks it all over and you have to start from the beginning...again!
Life and our experiences really are this perpetual circle, no idea where they start and end, you get half way around and have to go back and now you don't know if you are going forward or backwards.
My advice, tread lightly, for the faster and deeper you go, the more it hurts when you fall.