Teachers generally should supply encouragement. They need not worry about self-esteem. Self-esteem, by definition, is self generated. Furthermore, the whole doctrine of happiness as static dimension is a bunch of horsepuckey.
"Teachers generally should supply encouragement. They need not worry about self-esteem."
Please consider that the teachers come from educational programs, and most of them have seen their brighter and higher achieving classmates go into more demanding programs at college and graduate levels. Thus there might be in teachers a well earned inferiority complex. If so, how could they provide any self-esteem that is not bogus?