My interest for crypto currencies came a few years ago. I bought my first 3 Bitcoin at 250 dollar each and was a happy camper. Thinking this would probably go up in the future. I later sold these with a small profit. Had I instead kept these i would have about 7500 USD. Lesson 1 - NEVER SELL.
A few months later I looked around and found that there was other cryptos similar to Bitcoin but with different tweaks to the blockchain implementation. I decided to invest 100 dollar in Ethereum at 0.8 USD. I later sold these with a small profit at 1.2 dollar. Lesson 2 - NEVER SELL.
A few months ago I got sad about missing so many good runs in all these cryptos so I decided to go all in in Ripple at 0,03 dollar. (Price today is about 0.26 USD). I later sold these with a large profit at 0.06. Lesson 3 - NEVER SELL
Sorry for whining but hopefully someone takes my advice and doesn't log on to the exchange and instead keeps the coins in cold storage.