If you can hold it for another 5 years, that may be a good time frame and then start selling later.
Decisions.... that's what it comes down to. I mean, you can choose to lock in guaranteed profits of 100-200% when you're up, or choose to wait some more years with the risk of not making an awful lot of extra profit justifying the wait.
I have thought about it myself, and I will probably end up selling 25% of my total holdings whenever we hit $20k and from there carefully follow the price action. Thinking back now, I probably should have sold 25% during the peak in 2017.
I noticed that I'm not so comfortable anymore riding out those deep corrections. It's psychologically quite a bitter pill to swallow because you get used to the higher prices and then wake up to the reality of this volatile market.