I learned the hard way that Hodling BTC is the only way. I wanted to grow my BTC so i sold my 1BTC @32K a month ago and put that money in DeFi for yield farming in those high APY. I took some losses and some gains. Now BTC jumped 47K. If i would have just HODL all this way i would have more USDT then if i buy BTC now. Lesson i Learned: Yield farming is useless. People put so much at risk entering smart contract not to mention the daily time waste. Just HODL and you would have more more money than anyone yield farming in long run.
So did you sell all of your BTC? If yes, I feel bad for you and make sure you've learn something valuable when it comes to holding.
Don't feel bad for him for selling his BTC since whatever figure it is still good especially if he used it on good imvestment, Defi is not bad options though we must be seelective since there are so many scams there. And also but what bad thing there is if we don't take any actions right now especially the price is at cheap rate so best take an action since for sure a pump will follow after this.