Investors should be focused on adding more Bitcoin to their portfolio and not removing from it since the more the quantity, the more your profitability potential.. instead of selling some BTC, which might lead to selling too much BTC too soon, it's better to keep accumulating. I've learned that in BTC accumulation, it's more profitable to be a farmer, cultivate by continuous purchases, add to your portfolio and wait for the termination of your holding period to decide how to take profits, rather than being a hunter and always target short-term profits to satisfy your greed.
When we know that the bitcoin supply is fixed, and at some point, there will be a time when owning even a 0.1 BTC would not be so easy. So I think we should keep on accumulating as much bitcoin as we can without thinking about these bitcoin 4-year cycles or the bitcoin bear market / Bull market. When you buy a bitcoin and move it to your wallet, you're owning something precious, which is going to be scarce. With this mindset you will never be tempted to sell and with every purchase, it gives you a lot of satisfaction.