I still stand on the ground that when an investor has recorded some reasonable amount of profits then he can sell some of his bitcoins but not necessarily that he must sell all of it because despite the volatility of bitcoins I still believe that it's future is unpredictable as everything we all are saying are mere speculations. So instead of hodling Bitcoin after recording some profits is rather one sell it off and invest on other alternative assets that will yield good profit in the future rather than stagnating the coins in a personal wallet of which it will be of no value if it isn't exchanged or used to perform monetary transactions. A good investor doesn't depends all his earnings on a single project as it requires versatility in other to record obtainable results.
In as much as you may feel that is good by selling off some of your Bitcoin when the price increases could also affect you negatively because you could hardly know what the next move of Bitcoin could be so however it could happen that at that time you feel is good for you to remove or sell some of your Bitcoin that could be when the price will continue to skyrocket and you will be left with know option but to regret to have sold your Bitcoin.
Because the only investors who sells at every increase in Bitcoin price are mostly those panic investors who are always influenced by the price movement of Bitcoin, so if your intentions are for holding just stick to holding and remove the mindset of selling at every peak of Bitcoin price because holding is the only way through the heart of Bitcoin.