I knew a guy who was absolutely terrible at money management, he bought Ether with money he had saved for vacations. He ate poorly and didn't buy clothes to make this investment, after which cryptocurrencies fell in price. This example is also great for betting and gambling, I think everyone knows guys who bet with their salary and then complain that prices in stores have risen so much that it is impossible to live normally. You need to take care of yourself in the future, because we will all end up there. You need to be able to save money, or bet only with extra funds.
The story is a real story which to a many people who invest their money which is necessary for the person for daily life expenses. But if the person invest that on any stock business or cryto currency business or use that on gambling then how the person will servive after the loss on trading or on gambling. So, we should invest only those amount which we can afford if we loss.