To me, it seems quite unlikely and unrealistic for anyone to be able to accumulate enough or more than enough bitcoin in one cycle, unless he had been able to considerably front load his bitcoin investment from other funds that he has, and even if he takes close to a whole cycle to accumulate enough or more than enough bitcoin, he still might have to wait a whole cycle before he transitions from buying to maintaining and then to selling... and sure, my own preference is to figure out ways to sustainably sell bitcoin rather than selling most if not all of the bitcoin stash at once and then end up as a no coiner or a low coiner, which turning into a no coiner or a low coiner does not seem to be the reason to have had gotten into bitcoin... except maybe traders see bitcoin as something to get into and then to get out of rather than being something that is held for a lifetime.. and to just sell it as needed once reaching an overaccumulation status..
Hmmm that’s nice point selling all your coin after reaching your goal and becoming a no coiner is like you going back to your starting point . Which is not encouraging at all imagine selling something that took years for you to build in just one day , and we can’t tell if bitcoin may have gotten higher in price but we believe that bitcoin price will grow with time , so you selling when the price has surge with a massive increase, you won’t be able to buy cheaper like you once did if you have the mindset of buying back after a certain period of time , after selling all your coin . There should be better method of taken profits without selling all your coin.
Did you see the main title made by the OP above "Buy Buy Buy or Sell Sell Sell?" well, I took the end..because of what. there are quite a lot of speculators who always suppress the price, just look tonight a little bit of Jerome Powell talking about interest rates being lowered or maintained the market immediately reacted. We are not all rich people here.
I acknowledge we all in this forum may not be all that rich but we can all be good investors if we decides to follow the right path with bitcoin investment by accumulating more than always wanting to sell for some small profit made or fear of losing because of a market news that is causing panic. You don't build a portfolio to sell overnight for some chep profit except you're a trader. Long term bitcoin investors don't care about current news be it dip or rising price they continue with their accumulation by buying be it in a dip or high because the plan is long term where the massive profit lies.
As a long term holder despite the market conditions, whether the price is on down trend Aslong you haven’t sell your holding you haven’t loss a thing rather it will only give you opportunity to buy more rather than to panic and finding ways to sell at loss just buy the dip and hodl .