Most people feel disappointed because they did not buy and store bitcoins in the past, where they doubted and also thought the same things as you now, you need to know that the price of bitcoin will continue to increase from time to time, so invest from now on, we just have to be patient and see the right opportunities when buying it.
Patience is exactly what we need when it comes to investment and those who are doubtful people, they'll soon realize that are wrong and then start to invest. But unfortunately, they will not get the best price for it, they miss the opportunity to buy at the lower price.
I also encourage people to invest in crypto but we should have to settle ourselves first by simply having an idea of what we gonna do. And not just like that, They should change their mindset and turn to it positive because that is the only way it helps to control their emotions.