To elevate the world, you need to remain connected to your Source. We see this theme in a teaching on Yaakov sending angels to Eisav, which is also connected to Yud Tes Kislev.
Learn how the purpose of the Beis HaMikdash is symbolized by the neck, as well as the responsibility to fix the things we can improve in our life, instead of just complaining about them.
Yaakov's wish to reveal to his sons when Moshiach would come empowers us all to appreciate that we can bring Moshiach, despite our spiritual shortcomings.