Which of the cryptocurrencies did your friend invest into that made him to loss the thousands of dollars? And your friend was thinking that crypto is a get quick rich scheme? The fault might come from the person that introduced him to the cryptocurrency Ecosystem, the person would have told him the risk involved. Investing in cryptocurrency is different from gambling. Investing in cryptocurrency is a long term plan while gambling is a short term and gambling is not an investment. Those who understand cryptocurrency do not loss in the investment because they know when to invest and when to sell their token.
Laziness has nothing to with cryptocurrency investment because it is not something you are struggling with. You only but and store them in your wallet so in what way laziness come to cryptocurrency?
Yes, there is no correlation between laziness and crypto, what should be the main focus is discipline in carrying out the strategy that has been made and not breaking it. Introducing the crypto ecosystem must also be correct, don't just give a successful example that everyone wants. But also provide examples of risks that could occur. Investment is a long term plan with a specified target price. whereas trading is taking advantage of every crypto price fluctuation to make quick profits. A distinction must be made between investment and trade. Crypto will be wrong for those who do not place according to their interests.