Those who sold Bitcoin are in for loss but they can again buy Bitcoin as market is waiting for a positive sentiment which will definately drive the market to a new high. Market is due for a correction which can happen anytime soon.
That is why we are always saying that regrets are always in the end because we as normal people we are always in panic whenever we are seeing that the price goes up so for me it is fine for as long we will take it as a lesson in our life and not allowing to commit same mistakes again.