Although it is said that Knowledge is the main weapon to get success in Forex trading, but if your brain is not in stable condition to take decision and to decide before the creating position, then you might be ind anger, as you might not decide the price, and if you are urgency of money then you might find any price suitable for you to create the position but in real you might be wrong. so that cause you loss.
SO never ever trade and stay away from the market with disturb mind.