Assessing yourself to have had reached overaccumulation stage gives you options, and surely the greater your overaccumulation level, then the more options that you have, especially in regards to the overaccumulation amount.
Surely, I am not in any rush to sell my BTC, yet I did start to employ
price-based sustainable sales once I considered myself to be well into an overaccumulation level.. and I stared that in late 2015, and sure I made various reassessments along the way, too.
Investment in Bitcoin does not require any rush and people as experienced investors can calmly and patiently invest and accumulate bitcoin with time. Till a time they make their own assessments on their Bitcoin holding and portfolios and feel like it reaches to overaccumulation, they can make some strategic changes.
It would be time for them to think of partially withdraw their bitcoin and cash it out for enjoying their life. I mean it does not like their returns to fiat currency and central bank system, but this action woud give them chance to have more comfortable life and they can accumulate bitcoin again if they want. Have solid job and income before and during investment time, will be very helpful for long term investors to ensure that their investment has predominantly probability of profit than loss, and also give them more comfortable decisions for withdrawal in future.