This article is short but I have only included the last couple of paragraphs. It's worth reading in its entirety.
How can we take the profound soul experiences of Yom Kippur into an ordinary weekday?
To answer this question we must recall the teaching of Kabbala and Chassidus that there were/are five unique personalities who represent the five soul-modalities. King David represented all the souls on the level of nefesh. Elijah represented ruach, Moses neshamah, Adam chaya while Moshiach will embodies the level of yechidah.
When we connect our lives to Moshiach and focus our attention on what we can do to bring Moshiach and the Final Redemption in our days, we can then experience the level of yechidah. The mere desire to be there places us there in consonance with what the Baal Shem Tov taught: A person is where his will is. If we truly want to be with Moshiachand express that desire sincerely by attempting to live our lives in harmony with the ideals of Moshiachwe are there! When we live a Moshiach life we ignite the internal spark of Moshiach within usour yechidahand we get a taste of the profound joy of Sukkos that is a portent of the perennial joy we will experience in the Messianic Age.