As discussed before, not everyone is always aware of their emotions and why they feel them. When your team members are not aware of their emotions, they may not also be aware of what motivates their actions. They need to be aware of what they feel and why they feel that way in order to be able to communicate these feelings with others more effectively.
You can encourage them to start a journal where they can write a few sentences each day about the emotions they felt and what triggered them. You can also teach them how to do mindfulness exercises. You can ask them to do this on their own time or conduct mindfulness sessions as a group.