I think the main reason for losing in the forex market is the lack of knowledge, not using a good strategy, not using proper money management, large volume trading as well as greed. If a trader overcomes these reasons he should make a profit in the forex market. and Strongly agree with the others. I think low capital may be the main reason for many losses in Forex. Because if you have good capital then there is little chance of losing your trades. It also causes many things like your emotions and level of knowledge.