A gitte voch! As of tonight it is Isru Chag, which is a very holy day. Isru Chag is the day in which we tie together (as alluded to in the name, “Isru” means “bind up”) all the tefillos and various mitzvos of the Yom Tov. The gemoro brings in one opinion that this refers to enjoying the day after Yom Tov with food and drink, essentially to treat Isru Chag as a minor Yom Tov like Rosh Chodesh and have meat and wine. If this is eaten with the proper kavono on this special and holy day, then we can help our tefillos to have a physical path to manifest in this world. This is connected to the practice of leaving behind bread before bentshing, like it says in the Kitzur Shulchon Oruch that without some bread left behind for bentshing, there’s no place for the brochos to rest. The same applies to Isru Chag. Through eating on Isru Chag and specifically having the kavonno during eating that this is in order to honor Isru Chag, then our “package” of tefillos, along with the various Divine influences of the holiday, can be bound together properly, and im yirtzeh Hashem accomplish the various yeshuos that we need.