Have a look for this topic in a previous thread. I remember responding.
I had this hang up for some time, but got over it quite quickly. The trick was to close my eyes at the urinal so I couldnt see if anyone was at my right or my left. After a while I was able to open my eyes once the stream was flowing. Now if I need a piss I can do it in any context.
dont think this will work for me cause i can hear foot step and when someone even open the door to the restroom i get tense up also it seem to be strange if someone see you peeing with your eyes close.