Above image portrays a tweet made ten years back. By that time Greg Schoen have sold his 1700 Bitcoins. When the tweet was made, the price of bitcoin is $8. He had sold his holdings for $0.30 per bitcoin. It is a missed opportunity, because he wasn't able to sell at $8 as well as at the present peak. But, he's good enough to talk about cryptocurrencies. Now all he have is ethereum and few other altcoins and not bitcoins.
if that incident happened to myself then I would be very sad and I would meditate on it until the sadness was gone.
Usually I will look for something that I will hit so that all the annoyance in my head immediately disappears and after that I will take lessons from everything I have experienced, I just realized that everything needs patience in order to get a more satisfying result.
I am very sad to see this because in the past the price of Bitcoin was very cheap so anyone could buy 1 BTC, but for now not everyone can buy 1 BTC because the price has reached $65,042.