It is true that as an investor you have the full right to sell your Bitcoin anyhow and in which way you wish to but if you want to keep your investment going that strategy will be of great help, is very bad to build an investment to a great height and still end up running it dry at once, that is not how an investment should be done.
You are correct that sometimes people do not adequately think through their plans and then they may end up having regrets if they ended up selling too much too soon.. or stopping their BTC accumulation before they had reached a high enough quantity.
Many of us who were around the bitcoin space in 2022 and 2023 likely recall how difficult it was for some guys to be deciding if they should buy bitcoin or if they should wait to see if the BTC price might drop some more, and surely the guys who focused on aggressively and ongoingly buying bitcoin during that time, they ended up in a much better position today by focusing on accumulating bitcoin. Many of them might have not been able to buy more bitcoin, so they ended up doing as best as they could in terms of their BTC accumulation based on their circumstances and their perception of their circumstances, and so now they likely realize that whatever bitcoin that they were able to accumulate for prices that were between $416k and $45k per coin were likely purchased at prices that are never ever ever going to be experienced again.. Sure it is possible that bitcoin prices could go back down to those levels, yet it is also quite doubtful, so they may well be grateful for whatever BTC they were able to accumulate at those levels.. .and at the same time, they might already have tentative plans that they are not selling any of their coins.. and maybe they might start to sell at some price like $200k or even higher, .. or maybe they have to really assess their whole bitcoin holdings since maybe even if they might have had a whole cycle in bitcoin and accumulating bitcoin, they may well also realize that they are going to likely have at least a whole another cycle accumulating bitcoin before they migth start to get to a status of enough or mor than enough so that they might be able to start to consider possibly selling some bitcoin.
It's true that we can never overemphasize the importance of have a solid plan and also sticking to those plans when it comes to investing in Bitcoin. I'm pretty sure those who aggressively bought Bitcoin during the 2022-2023 dip and have continued to HODL are most likely to be in a much better position right now and are definitely grateful for every single sat they accumulated back then.
It's also quite true that a lot of investors might actually get confused about reaching their target amount of Bitcoin or even when they should start selling. Some investors might have the plans of selling at a specific price level, like $200k or maybe even higher, while some other investors might come to realize that they've not really reached their desired target and so needs to continue accumulating more bitcoin before they can even think of selling.
I've come to realize that it's really not just about having a price target, but also more about the journey. As we already know, Bitcoin is more of a long term gain, and the more we learn to focus on progress rather than perfection, the better for us. And even If we are unsure of what the future really holds for us, it's still possible to make informed decisions based on our long term financial goals, financial position and risk tolerance.