Selling an asset when the price starts to fall?
it was the wrong choice. When the price reaches $ 19k you should be able to sell some of the Bitcoin assets and not the other way around.
But when the price drops to $ 16 as it is today you need to take into account how much you want to buy again. Better to hold than sell if you buy around $ 19k.

We also don't know when the new ATH will be achieved, but hopefully this year it can be achieved and we will party.