I never heard of an old man forgetting where he had buried his money! Old people remember what interests them: the dates fixed for their lawsuits and the names of their debtors and creditors.
I always had two or three jobs at the same time. I started doing yard work when I was 7 or 8. When I was 13 I got my first state job doing road construction. Between working sports and school I hardly ever had free time.