The first step participants take in most leadership development programs is self-assessment.
The theory behind this is, that no one can lead others without first understanding themselves. There are hundreds of personality type assessments that vary in length, emphasis, and basis of research, including some more well-known assessments such as the Myers-Briggs Type Indicator, the newer Enneagram Assessment, and the assessment that Cooperative Extension has taught for over 25 years, True Colors, which incorporates edutainment.
No matter what personality-type assessment you take as part of a leadership program, any assessment will help you understand your own preferences, characteristics, communication styles, stressors, and how you are perceived by others.
There is more info at UAEX.edu/ced.