If you are unaware you lack a skill or are unaware of a deficiency you cannot ask for help. A coach should be able to observe and identify where you may have areas for improvement, it is common for us to be unaware of our bad habits or blinkered thinking, we get stuck down rabbit holes, sometimes this can be on an individual level and sometimes teams can be the same way. It generally takes someone from the outside to see the problem and help move it from unconscious incompetence to a conscious incompetence, once we are aware of a problem we can choose to do something about it.