No, it is not true. Traders in the forex market can be successful and make a significant amount of money without being greedy. Greed is actually one of the biggest enemies of a successful Forex trader. Greed can cause traders to take on too much risk, make impulsive decisions, and enter trades without proper risk management. In order to be successful in forex trading, traders must understand the importance of proper risk management, trading discipline, and having a sound trading strategy. Greed should be avoided at all costs, as it can lead to costly mistakes, and in some cases, financial ruin.