Although, no investors is happy when his investment is declining instead of appreciating but a good investor that have good understanding of the volatility nature of Bitcoin will not be under pressure when Bitcoin is in dip because the rate at which Bitcoin appreciate is much more than the the decline. And this is the reason why planing for long term investment is one of the unique quality of a good investor because if you hold a starch of Bitcoin for long term you will surely recover all the lost incur during the dip and still maximum your profit in the future.
Irrespective of any circumstances a good investor is always patience and perseverance and will always tend to sustain his investment for long term.
What you have mentioned is indeed part of it and also very friendly to Bitcoin, but the most important thing is that they already have patience and also a very strong belief embedded in themselves that keeps them calm in the face of volatility that is indeed part of Bitcoin. And the long term is the most appropriate choice that they must take because they are experienced and also always see the Bitcoin trajectory that continues to rise from year to year which makes them sure that in the long term the price will continue to rise and even though there is always a decline, in the end it will rise again and continue like that which makes them have a strong right hand and their left hand will take advantage of the decline that always occurs to be used to collect more Bitcoin.