meat grinder

I met MM last week over lunch. He wanted to explain a financial matter for which he used the example of the meat grinder. How at first it seems the output does not seem to match the input and the quality does not feel right. But suddenly it starts flowing good quality ground meat.
I was thinking later it is so true about most adversities in life. At first you feel you are just putting effort, spending your thoughts, providing your emotions, and you do not get the smooth result you are after. But by God there is relieve after adversity.