Emotions and thoughts do not define personality
Our raw emotions and thoughts aren't our personality, though they are often conflated as being so. Without mindful action regarding our emotions and thoughts, we are at the behest of whatever arises in any moment. This breeds chaos and suffering. We must be observant of what arises in the mind and then act accordingly.
The goal is not to remove emotions. Rather, it is to not be ensnared by them.
See also: Beyond the Self