Don't fall for the trap. Don't sell unless you absolutely have to!
Selling like what you mean, is it related when you need money? If this is the reason then you or anyone else is not a holder because do not have a good financial plan.
Bitcoin is freedom. Do not sell your freedom. Hodl it until fiat becomes less popular than bitcoin. Give it to your grandkids if you have to. Do not sell your freedom.
No need to overdo it as you can create a selling period every time the ATH comes and buy again after getting maximum profits.
If you hope that fiat will become less popular then you should wait until when, investments talk about profits that can be maximized.
I don't want to spoil your plans, but I'm not sure you are such a holder because without a balance between supply and demand we never know how Bitcoin could be where it is today.