It is the custom of Lubavitchers that two months prior to a boy's 13th birthday he puts on tefillin for the first time. Today was my son Mendel's turn. Menachem Mendel, that is.
On the other hand, the Rebbe Reshab's name was Shalom Dov Ber, which is three names. My husband has three names, and doesn't care for it much. Plus, son number 3 is Shlomo, which is pretty close to Shalom, another strike against it.
In terms of joy, let it be. Ouch, I'm obviously having some musical moments!