Fear of something may go wrong robs off confidence. This impacts our thinking and decision-making in negative ways, leaving us susceptible to intense emotions and impulsive reactions. All of these effects can leave us unable to act appropriately. Take every situation in positive frame of mind,fear will vanish itself. Never be afraid of what could go wrong,only focus on what could be right.Human error is nothing but a reminder to be graceful to accept mistake & to mend corrective way accordingly.