A bochur learning in 770 was very particular in following halacha, but as time progressed, his stringencies began appearing obsessive. The Rebbe’s advice for him: To have more Yiras Shomayim.
A cornerstone of Darkei Hachassidus teaches that being particular with mitzvos must be infused with a relationship with the Eibershter. Frumkeit must not become detached from Yiddishkeit. When done properly, halacha observance is healthy and wholesome.
Reb Yehoshua Mondshine A”H related:
There was a bochur learning in 770, in the year 5727 (1967), who was very particular in following every halacha in full. However, as time progressed, his stringencies began appearing obsessive.
At a personal yechidus, this bochur shared his concerns of his compulsive behavior with the Rebbe.
The Rebbes response changed his worldview:
“Zolst mosif zain in yiras shomayim, vet dos memeila aropfallen,” you should add in fear of Heaven, and it will go away by itself.
(Moments Archive; Kfar Chabad magazine)
From The Weekly Farbrengen by Merkaz Anash