I work with a machine shop full of felons, so most of them are into making knives as guns are off limits. We had this one 19 year old kid. He was absolutely worthless, but once he found out that he could make knives at the place, he got right into making one.
He worked hard on it...mostly when he was not supposed to (company time). Then as he neared the end, he was sharpening it when the blade broke. He used a cold cut saw blade and it was so hard, it would hold an edge, but not a handle. It was so brittle it snapped. That was all it took. He was crushed and never tried making another knife again.
It was too bad, it was the only thing he ever worked hard on.
I have no intention of traveling from birth to the grave in a manicured and well preserved body; but rather I will skid in sideways, totally beat up, completely worn out, utterly exhausted and jump off my tractor and loudly yell, "Wow, this is what it took to feed a nation!"