theoretically, if the high price you should sell. the right time to buy is when the price is low, to get a profit, resell at a high price.
I totally agree with this. The right time to buy is when the price is low. But if you don't want to wait for the price to go low, there's no better time than now. Buy today and hold it for long term like 5 years. For sure it will be like 300% increase or even more! More and more people will continue to chase bitcoin and Bitcoin will be more famous years from now and that made its price to be extremely high.