The first thing we must understand in bitcoin investing is the price that can not be controlled by anyone, it certainly has an impact that makes the price go up and down significantly, but if we get a lower price than when we buy then the waiting option is better and profitable than selling in a loss condition.
Yeah it is all upon you that how you deal what the price fall as a bitcoin holder if you have bitcoin do remember that never try to sell it at low price. If you find price low it is good chance to buy more bitcoin and hold it as well, many people get involve in bitcoin business gradually using this procedure. Price is almost increased but it is not high level price even yet at 20k because bitcoin is something very beneficial so wait more to get huge profit.