Re: BTC 100K FOR 2024 !

Immediately it is a new ATH I am taking profits straight up

If you planned on taking a profit at the new ATH you should have a good exit strategy to take your profit, implying this kind of strategy below would save you from taking a profit way too soon than supposed, I know how the feelings use to be when you exit the market early, and in some occasions, the market moves up like 2x from your point of exit, I suggest you should try this method while the market has not changed direction, 1st take 25%, 2nd 30%, 3rd 50%, 4th 70% and finally 100% 0f your portfolio.

That is a nice idea!
Purely a DCA way of selling. Just the reverse of buying in percentages too. I appreciate your advice. This method will make me not to regret much even if the market keeps moving upwards after attaining a new ATH.
Also, if after attaining a new ATH and bitcoin price begins to drop, it will not also affect me much since I am selling in percentages.

For those selling on the way up, I would also consider selling smaller amounts, and never going 100% fiat (which means never going completely out of BTC), even if there might be some who will choose to sell large amounts of their BTC on the way up.

My own personal strategy is to sell ONLY a small percent for each time that the BTC price goes up (so I am selling even less than .5% for every 10% that the BTC price goes up.. .. even though there are some folks who have recommended selling 10% for every 100% that the BTC price goes up, such as in:

Rpietila's (Risto) 2013 Thread entitled: (SSS) - A Sane and Simple bitcoin Savings plan

Please note that even rpietila was talking about starting to sell BTC once the BTC price had already gone up several times (past a certain threshold), and in that thread he was also recommending to never sell his whole BTC stash (even though I am not sure if he completely stuck with some of his suggested strategies and he turned out to be a scammer and he had his own personal drama issues.... too.. RIP).

Well after reading the thread and some comments in the link provided, I think you would rather prefer not to sell off any BTC if in case you are possession of some because the uptrend of the price is just a reminder that bitcoin bullish movement is still alive and has more force in it to even break bigger. When reading through the thread (SSS) - A Sane and Simple bitcoin Savings plan I could see some comment of some members actually arguing about the price going more than 10k $ then, and it made me imagine how big and fast bitcoin has grown since that time and the height at which it will attain in the coming years, I could say one can only hope to store and stack enough BTC as he or she can because the market is certainly going to go surpass the current 30k$ mark so selling BTC isn't going to be a thing I would want to do.

I recall reading a post (or maybe it was a thread?) by Rpietila in which he was concerned that he had sold too many BTC in the $600-ish territory during the 2013 price run.. and those kinds of things can surely happen, even when someone has a pretty decent selling plan that is mostly meant to be incremental selling on the way up rather than selling everything and then regretting it.

We have had examples of folks who sold everything on the way up because they thought that the price was going to come back down, and then they became bitter because the price did not come back down, and they thereafter decided to get out of bitcoin completely and be bitter about the whole matter - and surely some of those bitter people will end up coming back into bitcoin, and likely at a much higher price.. and whether they are able to recover from their own past gambling behaviors (that seem to play all or nothing behaviors - and tends to be worse incrementalism type strategies), is still to be seen and likely to vary since the details of people tend to be different and people tend to handle their finances and psychology in different ways too.