My most unforgettable moment was in 2013 when I started trading bitcoin.Back then arbitrage was way more easier to pull.
I made on arbitrage from one exchange to another with some random coin and I made 0.8 BTC in 10 minutes.
It's really fun, even now looking for a profit of 0.001 BTC is a difficult thing for me. It's great to be you who can get to know BTC earlier. Just look at today it has increased several times and reached the highest price. If you trade and defend it today, then you are already rich.