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.
Every good investor should be able to possess these qualities, they should be able to understand that Bitcoin's volatility is just a natural part of the cycle and should be ready for anything that the market brings, your investments may appreciate which is good or it may decline during the dip or dump but you should be able to stay calm and not panic during the dip and focus on your goals which is the Long term goals. New investors should be made to understand that patience and perseverance or the major qualities they need to sail through and remain commited to their strategy.