The gap between who we are and how we actually come across to our students needs to be as narrow as possible.  In addition to being relationship-focused, effective teachers must possess high levels of self-awareness.  They need to reflect, seek feedback, and accept coaching on a regular basis.  Effective teachers come across as genuine because they ARE genuine.  They are liked AND respected.  Falling to achieve these things can make you come across like a Dumbo to your students, and in turn, impact the learning.