That's right, but we are not always greedy. We need to understand where the greed is. It is essential to make you rich. If many people are not greedy when the bitcoin increases from $ 1 to $ 300, many people do not become rich. All is the opportunity and the moment, choose the right time to greed.
Greedy is a characteristic of rich people, because without greed people cannot become rich. When bitcoin reaches 19,000 USD a lot of people get rich because when they buy prices are still tens or hundreds of dollars for one bitcoin. Because they are greedy, they wait for prices to peak. When that happens, they get rich. Greedy is important, but accompanied by logic.