To overcome over trading in Forex trading, the most important thing is to have a trading plan and to stick to it. Having a trading plan helps you to keep emotions out of the equation and to manage positions in a disciplined manner. Setting stop-losses, take-profits and position sizing limits can also help manage risk and guard against over trading. Additionally, it is important to practice good money management by limiting the amount of risk per trade, ensuring adequate capitalization, and never risking more than you can afford to lose. Finally, taking breaks from trading and avoiding over-leveraging can be beneficial in controlling the urge to over trade.