What is the best stock purchase you have ever made and how / why did you make the decision to purchase that stock?

One of my best purchase is Disney. A 3 bagger based on my first purchase. I had purchased more recently.

The reason I bought it initially is partly due to misunderstanding the "Buy what you know" quote from Peter Lynch. I bought Disney simply because they own Marvel.

However, subsequently, when I realized my mistake, I took a closer look and realized it was actually a good buy based on it's business along, and even a greater buy based on it's long term plans.

The first stock you ever buy cos thats the one that start your path on investing rather being a hesistant outsider dragging his feet