When prices go up then most people will take profits by selling bitcoins, but not how long later they buy again even with a higher price, this is a mistake, we better keep bitcoin for longer time, do not be tempted to sell bitcoin even though the price rises because it will continue to rise.
There is no doubt that price will continue to rise in future and there will be also an downfall in the price so a person who wants to make quick profits will surely sell his coins when price is high and buy it back when price drops and that is the best way to make profits and what is high or low price will depend on the individual and it may vary from person to person.