Yes, regrets do occur frequently. You have to believe in coins that you hold and be more patient in investing if you want to succeed. The very volatile price of bitcoin makes it difficult to predict. Supposedly if you invest in bitcoin, if the price is down the right time is to buy. Prices are very volatile and declines can also occur at any time in large quantities, so if when investing prices with sudden falls it is natural. And the right action is to buy bitcoin again. If you intend to invest, all you have to do now is start investing. Because in the future I'm sure bitcoin will reach its highest price again and will continue to rise.