if people want to make their investment in bitcoin, they should learn and know why they choose bitcoin for the investment, and they need to have method or strategy how they used bitcoin as the investment. Besides that, they need to have a strong control for themselves, so they don't panic if the market is decreasing like today.
My take on most people that wants to invest is that they really need to learn and understand what investment is all about, and need to understand the difference between short term investment and long term investment, because I have seen that what usually make people panic sometimes is lack of patience, and the reason for this is that they tie the investment that is meant to be a long term investment to a short term investment, and when they do so, they become too agitated every time they monitor the rice of bitcoin, and investment is something they are meant to leave there for a long period of time while facing other things in the market, and checking on such investment should be periodically and not like every hour that people check on their investment.
Most people don't learn and understand what is investment, and they only know the global explanation from other people without telling the details. So they are attracted to invest their money in that program without learning anymore. They thought that if they already invest, that means they don't need to learn more, but that is wrong. They still need to learn and know what will go on in the investment so they can think about the solution if something wrong happens.
People can be panic if they see a bad thing that happens in the middle of the time, and usually, they thought about how to save their money from the lose. That happens too in the cryptocurrency investment, and many people are panic when they see bitcoin price jumps to the lower price and they doing fast-selling without thinking that is only a correction that will always happen.