Before we invest, of course we have to be dyor, all investments that have the opportunity for big profits, then automatically have a high risk, cryptocurrencies are very difficult to guess, and what I have experienced since I invest from 2016 sometimes laugh and sometimes cry.
I think that in any investment the key is in Hodl, that is, waiting as long as necessary until obtaining profits, but we must bear in mind that when investing, a person must know that he does not need that money, not use it, make an account that this money does not exist so that investment can make sense, as a friend says, you have to have a stomach to endure what comes to you, in the books of Warren Buffet, when he chose the stock to invest (after a long time investigating which was the best) he waited 8-10 years to earn and make profits, and this is only in the stock marke, in the crypto market we know that the safest stock or currency is btc, and you don't have to wait so long for it can make a good move.
I agree when it comes to investment one of the important keys is Hodl, but there's something that we should have before we invest and that's having a good mindset, not rushing to be quick rich, knowing the risk from the project that we invest(dyor), and willing to spend our money that we can afford to lose. Many people just don't care about that thing so they only know about the other people getting rich from investing.