BTC profit taking vs staying in the market

As BTC hits 100K, I feel like some of the smaller BTC holders would start considering taking profit. But then I have a question, it would be nice if someone could help answer and share some insights.

Q: Whales and big corps kept buying but rarely selling as they could use them as collateral in the future, and if small holder sell their BTC now, they might never see BTC price going back down like last cycle and buy back. There might eventually be no cycle at all if the market supply never increase. So, as a normal person, how do you balance profit taking and holding BTC long term?