Admittedly, I’ve got “factory-defective” wiring, but I’ve never really understood jealousy. When I learn of someone’s good fortune it tends to make me happy because, if for no other reason, it reminds me that these potential successes and joys and milestones exist in this world and that they’re accessible to me as well.
On Shavuot we emphasize the phrase, זמן מתן תורתנו (Z’man Matan Torateinu), the time of receiving our Torah. Why the exclusivity? Aren’t we tasked with being אור לגויים (Or L’Goyim), a light to the nations (based on Isaiah 49:6)? (Torah, תורה, contains two key letters, ור, of אור (Or), light–furthermore, in Aramaic it’s referred to as אורייתא (Oreita), further emphasizing the concept of light. Kabbalistically, in the Creation of the Universe, the primordial light is called אור כי טוב (Or Ki Tov), Light which is the essence of Goodness, another reference to Torah which was later publicly revealed by Moshe Rabbeinu (on Shavuot) as a Tikkun, repair, of the damage caused by Adam’s sin.)
Perhaps part of the answer, at least, is that while the Torah is, indeed, given to each of us individually (and not limited only to the festival of Shavuot, but every day (see previous article), we each need to interact with it individually, to “process” it in terms of our unique Neshama, soul configuration, as preparation to sharing it with the world, acting as Or L’Goyim, Light to the Nations. Likewise, we need to process and develop the brachot, blessings, good fortune that comes to us, preparatory of transmitting them to the larger world, transforming our receiving into our giving and thus fulfilling our ultimate charge of imitating God.
God, in His Infinity, did not create a static, zero-sum world, but rather a win-win world. When we celebrate others’ blessings, we know that the benefit isn’t lost in a “black hole” of that person’s ego or narcissism. Nor is it detracted from what is left available for us to enjoy. Rather, it adds to all of our lives. When we celebrate another’s success, we add our light to the light that they will add and that’s one very simple way, no years-of-preparation necessary, to dedicate our lives to being Or L’Goyim.