I did a short-lived attempt at day-trading 15 years ago. Bought a few tens of thousands of NFLX, NVDA, and AMZN. Sold it all maybe a week later and made a couple thousand bucks, which I thought made me pretty smart.
Still, it's amazing that for all the hours of work I put in, day in and day out for years, I could have amassed 10x more money if I had just done "nearly nothing" at a couple of key moments.