I think, particularly when one is new, it is critical to periodically step out and sample other instructors...because when you are new, you think everyone is good and that is when you are picking an instructor...precisely when you have no idea what you are looking for....I remember, a few years into dancing, having a coaching where I actually got to do some dancing with a well known guy, and thinking; holy moley THAT is how it's supposed to feel?...and, I vividly remember, after 3 1/2 years of dancing, walking into my current pro's studio and doing my first basic bronze tango...when we did a corte, I thought my teeth were going to fall out....my first teacher wasn't a bad teacher, I was fortunate...but I also had no idea what I was missing....and I was missing a great deal