I would definitely be selling the majority of my Bitcoin. Keep some in for continued growth. When this thing crashes there are going to be some devastated investors.
If you take the view that BTC will approach of surpass gold in market cap, then you have a 20x increase from here. And if so, "corrections" along the way are mere blips in a overall one-directional journey. It is far far harder to predict the exact path that will be taken along a journey, than it is to predict the final destination. If you believe you can predict ups and downs of BTC along the way, every "overbought and underbought" signal etc, and if you believe you can truly apply "technical to such an asset" I wish you luck. It's certainly not something I am capable of and I am very skeptical of anyone else's ability to do so, other than highly skilled and resourced quants.
I am quite happy placing a long term bet on Bitcoin, not just because of the possibility huge and asymmetric of long term upside, but also because I want exposure to this asset as protection against a range of future risks.
We have another halvening in less than for years from now, and in the meantime a wall of fiat capital slowly being released and realized as our clunky banks and pensions funds etc who will start slowly buying in. We have huge infrastructure efforts on the verge of being rolled out opening up BTC to the masses in global payment systems.
I do very well understand the sentiment of "taking a quick gain" if something seems to have risen too fast. Its something we have been conditioned to think, almost as though we didn't "deserve" such a quick gain, or that if something gains fast it must inherently be overvalued.
I could sell off one or more of my 50 coins, and standard portfolio management dictates that when one asset class becomes overweight you rebalance. On the other hand, as Charlie Munger once said, "only people who don't know what they are doing run balanced portfolios".
The reality many BTC owners have, is "what would I do with the cash"? In my case, I really don't feel too comfortable holding any more fiat cash at the moment given all that is going on and how rapidly cash is being devalued through money printing backed by debt that cannot be repaid. I feel equities, (at least in the US are vastly over-valued). I might possibly buy more in Europe or Asia. More property is simply a hassle, inefficient in terms of acquiring and divesting, and produces a low yield. Bonds? No way. Gold? - I have more than enough and am less comfortable with this than BTC for obvious reasons. Pay off a little debt? Possibly but cost of finance is virtually zero at the moment. And so on it goes.
Given all that is going on in the world, politically, and in finance, and in technology, BTC is in my view possibly the most important assets to be holding if certain scenarios play out. For those who have the ability to become or remain a One-coiner, my advice is to acquire at least that one coin and then simply HODL. If not a whole coin, get some Satoshies and work your way up towards as much of a coin as you can. No doubt though, there will be some volatility in price along the way.
