The penultimate Lubavitch rebbe writes in his principles of education (Chapter 10, starting here), that to feel down is not good but to feel secure and have a healthy self esteem is not good either. Right after that he writes that to have a healthy self-esteem is good but not all the time and in certain ways and to feel low is good all the time very enigmatic piece
can someone please explain what does it mean when is it good to feel low why does it say self-esteem is bad what's the correct way that he is telling us to do?