Although there is clearly potential emotion in trading other people's money on an investment bank trading desk, home traders tend to be more emotional as the money is their own.
We can talk in generalities and there are always plenty of exceptions since people vary enormously in how they deal with situations. A first responder paramedic arriving at a road traffic accident where people are trapped in burning cars might feel nothing, but most do feel emotion. They just get on with their job and deal with the situation logically and sensibly, ignoring what they feel.
Trading successfully is, imho, about doing the job and ignoring any emotion you might feel.