Why? Since it is so frightening, you can not run into him and, instead, it is easier to deny than confront him. Unfortunately, he remains forever in that reject 'low', always subconscious. You become comfortable to live with this fear through your process of denial, but, somehow, you always feel that chtoto holding you back, or you can imagine that gets loose. This is a 'low-level' (But always present), the fear that you deny has the ability to become powerful only by the very act of denial. And, this type of fear remains in the subconscious and, therefore, will affect your beliefs and, in eventually manifest as your reality. If you are a trader, it will interfere with you until your worst fears are not realized in the failure.
Traders who are experiencing thoughts of failure, should not shy away from them. Instead, they have to figure out what causes these thoughts and take action to eradicate them. Traders who are afraid of failure, ultimately, will fail. Traders who are afraid of success, will not succeed. If you are having these thoughts, do not trade until you encounter with these thoughts openly, when they will be less powerful than if they were rejected.
You should confront them and remove their power, so they do not occupy your thoughts. You have to deal with the fear of failure or fear of success, and to remove these fears from your mind before you succeed in anything you do. Therefore, carefully choose their thoughts, and desperate to protect them! External factors may influence and really influence your thinking.