Once, the previous Lubavitcher Rebbe, Rabbi Yosef Yitzchak, said concerning one who should educate others in Chassidic practices:[1]
It is important to keep in mind that though a student is successful in his studies, he needs much apprenticeship and experience before he himself can in turn be an educator and a mentor.
This is akin to the aphorism of chassidim of old:
“An old chassid is a wiser than a young man who has both intellectual prowess in Chassidus and serves G-d at length in prayer.”
[1] Likutei Diburim, Vol. 3 Sec. 28
