The best case scenario in confirmation bias is that a trader will simply waste precious time researching what they already knew to be true. However, the worst case scenario is that not only will they lose time, but also money and the motivation to trade. A trader must learn to trust themself, and be happy to use their intelligence to develop profitable strategies, and then be able to follow them without fear or doubt.
Most retail investors should spend time investigating a forex dealer to find out whether it is regulated in the U.S. or the U.K. (dealers in the U.S. and U.K. have more oversight) or in a country with lax rules and oversight. It is also a good idea to find out what kind of account protections are available in case of a market crisis, or if a dealer becomes insolvent.
The blender company could have reduced this risk by shorting the euro and buying the USD when they were at parity. That way, if the dollar rose in value, the profits from the trade would offset the reduced profit from the sale of blenders. If the USD fell in value, the more favorable exchange rate will increase the profit from the sale of blenders, which offsets the losses in the trade.
Confirmation bias is the one factor that is most common amongst professional traders. Looking for information that will support a decision you have made, even if it wasn't the best decision, is simply a way of justifying your actions and strategies. The problem is that by doing this, you're not actually improving your methods, and you're just going to keep making the same trading mistakes. Unfortunately, this can create an infinite loop in Forex trading psychology that can be difficult to break.
This is the only way you can really stay on top of your trading. Allow yourself to make mistakes - and don't make the mistake of being scared to prove yourself wrong - you'll be in a much better position for it in the long run. You have to be comfortable with accepting that mistakes are inevitable, especially in the early stages. It's all part of the learning curve.
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This material does not contain and should not be construed as containing investment advice, investment recommendations, an offer of or solicitation for any transactions in financial instruments. Please note that such trading analysis is not a reliable indicator for any current or future performance, as circumstances may change over time. Before making any investment decisions, you should seek advice from independent financial advisors to ensure you understand the risks.