Before I say this it may be also the leading cause of fear to another trader out there... let me talk about it because I was fighting with it before fixing myself.
When never I trading and had a lose I was in fear, I focused on the possibility of failure, where by the market wasn't causing my failure and pain .
The market give me opportunities but I felt that they were over risky. but the leading cause of that was my mind.
My mind was automatically Linking the "now"moment with my most recent trading experiences of losses. this links taped me into pain of losing creating a fearful state of mind and causing myself to be a fear based trader.
So Dear Traders break those links by fixing the trader in You every Day.