The psychological skill you'll need is remaining disciplined, consistent and committed to your purchases amidst market fluctuations, paying deaf ears to the markets and focusing on reaching your accumulation target faster within your holding period and better still reaching a level of over accumulation still within your holding period.
Recently, there has been this fear among investors which looks like most of them do not believe that bitcoin is going to continue going higher considering that of recent, it appears that the market has been relatively slow. investors that are considering selling their coin are the ones that lack the psychological skills that keeps them disciplined throughout the different market condition without being dragged to selling due to pressure.
The only way one can thrive through the different market condition is pretend as though you are unaware of the present market condition and stay disciplined with whatever buying strategy you are currently working with. that way, when others are selling due to fear, you are not going to get tempted to sell with them and with that, it becomes easy continue buying your bitcoin following your set out strategy.
I don't know where you got this information about the palpable fear among investors getting afraid of the Bitcoin price going higher, first what is the market dynamics that is encouraging such fear, because if you talk about the market being slow, then that is a natural phenomenal associated with the market, because the price isn't stable on a particular direction, which to me shouldn't cause any panic for investors especially for Investors that knows their onion. If an investor wants to complain about the fact that the market is slow recently, then he might not have checked the growth trajectory of Bitcoin in the last few years of few months.
Maybe its like fear of uncertain because they are not really sure about what's possible to happen on Bitcoin and there belief is not enough that's why they feel those things or get pressured about latest situation when Bitcoin price drops.
If they are complaining about those past movements I guess they are only looking at the price for short term. They are thinking about trading their Bitcoin with that case and no intention to hold their Bitcoins and that's the reason on why they questioned everything then get afraid if those unexpected situation which cause them troubles came.
That's why people just choose to hold and ignore the volatile movement since for sure they would never get any issue even if the market is experiencing a short term decline.