I would say that extensive use of leverage as the root cause of loss for most of the traders. Even though most of the traders are reasonably good in picking up an opportunity, the entry may not be perfect due to lack of experience.Thus, high use of leverage results in margin call and subsequent liquidation of positions. The trend may still be in traders favor but before the price movement starts small reversals against the primary trend would result in a substantial loss. This is a regular occurrence in the life of a newbie. Once a trader starts using leverage wisely, he can quickly grow his account, albeit with small profits. It is always wise to remember that small drops make up an ocean. Certainly a lot of money can be made in this profession. However, what is required is a strategy that fully takes care of the cons related to forex trading.