If you're sure you're going to get a lot of sales, I think it's all right to sell bitcoin now and then take the profit. Since Bitcoin's going to be very volatile tomorrow or in a week. So you're losing the money. In addition to speculation, the important thing to invest in crypto is morals not to be greedy. Sometimes people continue to hope that the value of a coin will continue to rise and delay selling, but the coin does not actually rise. And selling is the right decision if you already have profit...