I want to notice one fact, Its funny, 90% of people buy high and sell low.
When Bitcoin is very cheap at $4,000 everyone is scared and won't buy Bitcoin, but when Bitcoin is $20,000, everyone wants to buy and takes out loans and sells their house to buy it.
I will repeat words of the best trader:
"Buy with the cannons, sell with the trumpets."
"Be greedy when others are fearful and fearful when others are greedy".
Warren Buffet