What's the best financial decision you've ever made?

I dumped most of my life savings into buying stocks after COVID happened. I had just started investing and took a massive hit in March of 2020. Rather than pulling my money, I waited a month for the market to stop falling. Then I put a lot of money into US oil, and a few Casino/resort stocks.

I didn't have a ton of money, but those investments have more than doubled. I still can't fully pay of my house, but im getting close.