Panic selling! That's always the result of focusing on the chart instead of focusing on your accumulation. Bitcoin is very easy to understand and manage its emotional requirements in the sense that the more you spend time worrying about the chat, the more you get emotionally weak and the end products are the same, Panic selling!
It is true that there's no certainty about what the future brings but there's a reason for saying that one should always invest with the amount of money he is capable of HODLing/ Forfeit. When this simple law is followed, one can easily go a very long way without worrying about his stacked funds in bitcoin. It is not too hard to fight off this emotional attachment even though no one can completely forget his resources, but when you don't get greedy, you will always invest within your means which will make it easier to HODL for a long term.
You are right, it is better for a long-term investor to avoid what is happening in the market and where the price is going. It is not that you cannot see the price of Bitcoin, but rather ignore the price changes and think about the price 10 years ago. If you try to invest by accepting this fact that Bitcoin is volatile in the short term, but is upward in the long term, the chances of panic will probably be reduced to the greatest extent.
Another thing is to invest with unnecessary money, or use money that you can afford to lose or leave for a long time. The main reason for panicking in market volatility is lack of knowledge and weak mentality. To improve your mentality, increase the scope of knowledge by acquiring knowledge regularly and practice it regularly.