I'll probably write about this in greater detail as I get closer to an actual confirmation date, but there are a few factors here. While I grew up Episcopalian (and later Anglican), I drifted away from any sort of religious study for several years during and after college.

I had a near-death experience in 2016 that helped me turn back towards religious study. This led me to taking the works of thinkers like CS Lewis more seriously, as well as some time spent in Jungian study. I spent the next couple of years putzing around in this space, with the not-uncommon "religious institutions are really great and have been helpful but I am not particularly drawn into them" view that a lot of eggheads have.

My turn towards the Catholic church was largely a function of my previous study of Aristotle and a strong interest in the role of tradition and aesthetic beauty and how that relates to the idea of the sacred. It started as an intellectual interest a few yeras ago and grew quickly in the second half of this years into actual, personal experiences that I can point to in my internal spiritual life that lead me to believe it is true. 

In Aristotelian literature, you have Aristotle lay the groundworks for modern philosophy in Ancient times after Socrates and Plato and then you have...essentially nothing until Saint Thomas Aquinas comes along.

Aquinas builds on Aristotle's ethics, epistemology, and metaphysics in a way that is really quite masterful, especially for the time at which he was writing.

So it was a combination of engaging with Aquinas and personally exploring the Catholic Church's traditional respect for beauty in architecture, art, and music that made me decide to dive deeper into Catholicism proper.

Aquinas is not super-accessible, so Peter Kreeft's writing was helpful for my deep-dive there.

Experientially, the priests and laypeople at the Institute of Christ the King Sovereign Priest parish near my house have been really helpful. 

I have also found St. Augustine's Confessions and The City of God helpful.