Interpersonal skills is a core area for professional development.
Knowing our style, having confidential feedback on our self presentation can be hugely helpful.
The most important skill is the ability to get along with people. If you don't have that skill, any success you will have will only be temporary.
Most of us have interpersonal blind spots and relative weaknesses and feel that we could use input or improvement in some areas of interpersonal interaction.
Frequently people have been able to hide a shortcoming for years, but are now faced with the awareness of limitations. The time has come to deal with that shortcomings and fix it.