I find myself struggling being unable to properly think through my opponents range in the middle of a hand. Some of it is definitely related to stress over the possibility of making a mistake but I think that stress stems from the fact that in a hand I'm never quite sure where I'm at and so I know I'm more likely to make a mistake/do make mistakes in spots where I shouldn't be. I searched but didn't find quite what I was looking for. Any help would be appreciated.