Yes, it's very possible and even now the price is not far from it. $20k is a strong psychological level and many sellers become active on ATH, everybody understands that but I believe there will be some new catalyst that move BTC price way beyond $20k resistance in 2021. We just need some patience.
Patience is required and a psychological level will be in play before bitcoin hits a price of over $ 20k. 2021 is a new year and the year Bitcoin reaches its highest price previously reached at the end of 2017.
But before the new ATH is reached, shocks will still occur and the role of psychology is needed and the resilience of reserve funds must really be prepared. Don't overly trust bitcoin predictions which say that Bitcoin will reach a price of $ 100k or $ 300k, because that is only speculation and cannot be trusted and every prediction model used is a
Hedge Fund so that the model cannot be used as a reference.