Lawyers get paid the big bucks not to get distracted. There was a famous criminal trial in my town a couple of years ago, the subject of an Academy Award winning documentary, in which a pair of unassuming southern aw shucks attorneys completely disassembled the police department -- all without raising their voices.
A good attorney will lead you down the path to your own destruction, and you will wake up, as if from a trance, thinking you did good,
Exactly. For the witnesses and other lay people (and sometimes the lawyers, but not often), there is a "heat of battle." But for the good lawyers, there is no "heat" because they are all calm, rational, methodical. The do bring passion, but they don't lose their cool.