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.
Fear – Traders become fearful of entering the market usually when they are new to trading and have not yet mastered an effective trading strategy like price action trading (in which case they should not be trading real money yet anyways). Fear can also arise in a trader after they hit a series of losing trades or after suffering a loss larger than what they are emotionally capable of absorbing. To conquer fear of the market, you primarily have to make sure you are never risking more money than you are totally OK with losing on a trade. If you are totally OK with losing the amount of money you have at risk, there is nothing to fear. Fear can be a very limiting emotion to a trader because it can make them miss out on good trading opportunities.
There is only one piece of advice to solve the problems of traders that can be drawn from studying Forex trading psychology - and that is to develop a trading plan and stick to it. As a trader in doubt, you should absolutely feel free to research every other possible remedy available, but the chances are that you will still come back to a simple trading plan. It's understandable for traders to feel fear when they are trading.
Since the market is made by each of the participating banks providing offers and bids for a particular currency, the market pricing mechanism is based on supply and demand. Because there are such large trade flows within the system, it is difficult for rogue traders to influence the price of a currency. This system helps create transparency in the market for investors with access to interbank dealing.