Instead when they think of bitcoin, it should be of putting money in their "bank".
That way, the idea of cashing out or liquidating at some future point becomes completely meaningless, and time becomes inconsequential.
"Yeah, I'm putting money in my bank today, with the plan of taking it all out after the next 4 years."
"I need to know when to liquidate my bank account at the next top."
"When do I sell all in my bank account?"
See? Why would you do that? Makes no sense.
Precisely what I do now.
I use Bitcoin as my savings account and only ever "cash out" when I require to buy something.
I use it exactly the same as I would a bank account.
Not really interested in trying to "Time the market", the market WILL inevitably be Bitcoin!!