If a market recovers from $3k and quadrupled in a few months i consider it as a huge rally, no other financial asset in the world will give you that much profit in a short period of time considering when the rally started. Even if you entered the bitcoin market at a later part of the rally in 2018 and was holding it for a longer time, it is better to hold for a year further if he had the patience to hold this long it is better to wait for another year and even if you want to book your profit it is possible because the time that took to rally to its all time high valuation was a short window and i really do not think that many invested at its absolute peak.