Studied a listed company for about a year, invested a very negligible amount not knowing the share price was at an all-time high. Mr. Market doubled my principal in about 16 months. I realize my intelligence had no role here. It's a defense company being controlled by a democratically elected, nationalistic government. Mr. Market is doubling my money, not me.
Combine it with the fact that the only real asset you have is your time.
Imagine getting a tailwind at the age of 50 and being financially illiterate. AND, being partially blind.
I was literally too busy to not realize what really mattered. Decades gone by!