GBPJPY
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your FEARS will act against you in such a way that you will create the very thing you are scared of to really occur. If you are terrified of being wrong, your FEAR will act on your own perception of market data in a way that will enable you to do something which ends up making you wrong.
When you're fearful, no additional possibilities exist. You can not perceive different possibilities or act on these properly, even if you did manage to perceive them, because anxiety is immobilizing. Physically, it causes us to freeze or run.
Cold fact of gambling is that each and every trade has an UNCERTAIN outcome. Unless you learn to completely accept the possibility of an UNCERTAIN outcome, you may try either consciously or unconsciously to avoid any possibility you define as debilitating.