How to not be affected by “being watched”

As nature of the job and training others, I often find myself being watched/teaching procedures. However this massively affects me - even if I’m trying to be like “I don’t care I’m being watched” or trying to build my confidence, the nature of being watched can sometimes subconsciously make me so super conscious that basic steps i mess up and mess up the procedure. Anyone have any advice with this? Or is it just keep doing stuff watched and hope you get used to it before the stress of it burns you out