I know this is very addictive, but I have learned also by loosing money. So first, do not use your credit cards for any reason, even if there is a rebrand of a coin and it promises high and quick profits, you never know what will happen with this market and there will always be good opportunities to invest. Then just use money that you can loose, lets say if there is a weekend where you normally spend 50 bucks going out, dont go out and spend those 50 bucks in cryptos. and third, if you already loose money, let the money there for some time, with the time, if that is a good coin, the price will recover and when you get your investment take the money out and forget about the cryptos.