And you see, you have just backed yourself into a corner when the strategy that might work doesn't fit your own targets, and no matter what you do the risk for losses or unrealized gains evaporating is the same. Pretty normal, there is no bulletproof strategy, there is no algorithm that can guarantee you anything, the same thing that can save your skin today might make you regret trading next month, in short gambling!
Just because there's no bullet-proof, 100% effective strategy doesn't mean that no matter what you do the risk of loss stays the same. Some strategies are more effective than others, holding forever is just one of them.
Nothing in this world is guaranteed, but it's all about maximising your chances.
So, as usual, the best advice would be to hold until you actually need the money!
I don't think that was ever good advice to begin with. If I happen to need money when Bitcoin is at the very bottom of a bear market, would selling it then be a better option than selling it at (or close to) the previous peak? Of course not.
Historically, those who applied the sell-the-top-buy-the-dip strategy are better off than those who just held, even if they were not quite accurate in predicting the tops/bottoms.