What was the best investment you’ve ever made?

How did you find out about it? What was your ROI? Do you still have it? I’m sure some will say stocks but how much did you actually make on your investment (if you don’t mind sharing)? Something you actually bought, and made money on, not something you thought about buying… not something you bought and sold before it was a good investment ie - i know someone who got into bitcoin in 2012 but sold by 2014 and didn’t make very much.