1 - most people did not get what is called an "emotional education." What are emotions and how they guide our behaviour? What are habits and how they differ from intentional activities? What motivates human behaviour? What are biases and how they actually help us 98% of the time, etc.
2 - most people are exposed to pseudoscience and outright wrong information - jungian personality types, maslow's pyramid of needs, win-win negotiations, and so many other models only generate confusion and unproductive biases
And to work toward a solution:
1 - read up on psychology, there are many 101s good enough to get you a head start
2 - read on subjects as "active listening," jobs-to-be-done, non-violent communication, and "FBI behavioural change stairway"
And find a practice-buddy. I work pro-bono with a couple of fellow startup founders exactly on this skill, because our day-to-day work forces us most of the time in a problem-solution mentality. It is so much more precious to get and offer understanding, the non-judgemental type, and acceptance, without any intention of change.
Let me know if I can be of service here