anybody who sells all his or her portion of bitcoin at early stage of accumulation all because he or she  have made profit, and then wait to buy back cheap when bitcoin dip that person is not a good investor, he or she doesn't know the wort and the  value of bitcoin, because if you understand bitcoin you won't sell in a hurry rather you buy more bitcoin's with any of strategy that is best suitable for you wether buying the dip, DCA or lump-sum and hold, and holding should be 5 to 10 or more, in other for you to make good profit, because this mindset of selling your bitcoin at early stage all because you have made profit and waiting to buy back cheap when bitcoin dip is the mindset of a trade and not the one of an investor who knows the value of bitcoin, and buying back cheap maybe Very difficult because bitcoin price may not dip to the price you are desiring to back which you maybe still end up buying back at higher price that is not your desire price.