I have several experience for this common mistake and for the res as if own that greed will affect their trading very much with without knowledge we can not do the business after all It is not really easy for traders of forex to avoid their losses because there is no perfect forex trader yet that Forex trading is a business so in here both are present that's are profit and loss then that if we use good trading strategy stop loss and money management you can avoid some of the loss that we encounter sometimes