What is the best investment that you have ever made? Please share!?

Invested in tesla

The best investment would be to invest in myself, picking up new skillsets and taking a plunge into new opportunities/careers that I'm not so familiar with.

Holding on to a handful of 2 and 3 baggers. These are purely based on understanding the fundamentals of the business and evaluating its value before buying them. Tough work, but definitely worth it. And I will still continue to hold them forever, unless its business fundamentals change.

Buying a penny stock on SGX because it was one of the highly traded counters, and selling it for 30+% gains in the next couple of day but honestly till now I have no idea what happened then.

Sadly, I invested in the same penny stock again couple of months later, and lost all my gains.

Moral of the story to me is to research on the company you are buying stocks in, luck can only get you so far.