I have got a few friends who seem to act according to their emotions. They are not rash per se but more unthinking at times, governed by sentiment, often jumping into what they feel, rather than think, is the right course. A cursory examination, coloured by prejudices. As a result, their actions and statements often seem thoughtless and rash. I have seen it too many times before.
Still, it is how they had chosen to conduct their lives, I respect it. It is entirely their ship to steer.