You are very correct OP, it is not limited yo trading but to every form of investment, always ensure you invest an amount you are able to bear its loss, do not borrow to trade or invest and always trade with core knowledge and emotional balance
it's only natural if we invest in assets that we can sacrifice. we will not know what risks we will face in the future, because in the world of commerce, everything is possible. so far, I've noticed a lot of people who quit because they invest so unnaturally, that they are even willing to go into debt. however, this is a solution for the beginning of trading.