The one thing I've learned since the launch of btc is, no matter what you say. There will always be people telling you that you are wrong.

I'm in Crypto since 2015 on Binance since 2017, and this is the 10 key lessons I learned during my journey:
1) When most of the community is bullish is when you have to consider selling and when the community is bearish to buy.
2) If any crypto is risen by over 20% in one day, it is better to sell before the rest of the community will start doing so
3) When you see a massive green candle in volume this means that a whale just bought in and you should sell if you are holding and not buy in into the hype or you will get wrecked
4) Do the opposite of what your emotions are telling you to do, because you can succeed only if you go against the current
5) Options and futures are the fastest way to lose money and is just gambling, reason why in Europe is not allowed
6) If you see a lot of pubblicity about a coin that you never heard about often is a scam and you should avoid it.
7) Real experts don't tell others how to invest but share an analysis of the price action trying to predict future outcome and never guarantee that their predictions are 100% true
8) If you see a lot of likes and shares on a post this don't give it credibility, mainly because there are people that uses bots or multiple accounts that they use only to boost their ratings in the hopes that other readers will fall into their trap
9) Whales use and even pay influencers with high subscriptions counts to promote scams and technical analysis that forecast price actions opposite to what whales want to do.
10) Never use stop loss, instead sell manually. Because there is a public heat map that shows where there are a lot of stop losses. Whales manipulate the price in the opposite direction to force liquidations before moving the trend in the direction they want