I have heard that before and never understood that; I understand code I wrote 40 years ago fine. I have issues understanding code by others, but my own I unders

I have heard that before and never understood that; I understand code I wrote 40 years ago fine. I have issues understanding code by others, but my own I understand no matter when it was written. Of course others don't understand my code until they dive in and, like me theirs, forget how it works weeks after. I do find all my old code, even from yesterday, total shite and it should be rewritten, but probably never will be.