At superficial glance, it seems like a fun, light-hearted holiday accompanied by feel-good mitzvot (donations to the poor and to anyone who requests charity, mishlochai manot, and being happy).
But a deeper look reveals a very strong connection to Yom Kippur.
It's actually a day in which the more correctly you can carry out its mitzvot, the more benefit you reap on your deepest soul-level.
Purim is a powerful & empowering day rich with many hidden layers of meaning & influence.
The transformative joy of Purim comes from profound gratitude to Hashem, not mere levity or light-headedness.
You can find posts on Purim by clicking "Purim" in the sidebar of Categories.
(Or you can just click here: Myrtle Rising Purim posts.)
And as always Rav Avigdor Miller offers good solid guidance for Purim, both in halacha and our attitude & understanding of Purim:
Purim with Toras Avigdor (includes dvrei Torah, plus several Q&As -- everything you wanted to know about Purim, but didn't know who to ask!)
And just so you don't miss it, here is an interesting, all-important question answered by Rav Miller:
Rav Avigdor Miller on Post-Purim Blues:
Now that Purim is over, what are we supposed to think?