This is the single and greatest advice that anyone must have- control your emotions and consider the market as something that is natural. Remember that cryptocurrencies are the most volatile currency- they change their prices at any given time, as compared to stocks where there is only as definite time where people can trade.

Though this may be the case, it is relatively difficult to take hold of one's emotions especially if that person trades or has hundreds to millions of dollars worth of BTC in their wallet. Like the slightest increase/decrease on the price could imply a loss/gain of thousands of dollars on their end. While that may be the case, it is important to consider that on top of having courage and control over your emotions, a proper construction of a contingency plan is essential.