Some may say this doesn't count as I wasn't yet baptized, and baptismal regeneration is becoming an increasingly large consensus these days; but I think it's relevant. If it doesn't help you out reading it, that's fine, and I apologize.
Even as a young child I was very passionate about the Christian faith, and loved doing things at the church and listening to the hymns, and I prayed every night (though at the time those prayers were very immature and at times selfish; things such as praying for a long life, etc.), and tried many times to read the Bible though but the only version my family was universally open to at the time was the KJV and the 16th century English stumped me hard. I did however spend my entire Summer break when I was 13 reading countless articles and other such things about theology. Though I hadn't been baptized, I feel like I was at least in a situation akin to those converts mentioned in the Epistles who showed the fruits of the spirit even though they were young in their faith and hadn't yet had the opportunity for baptism. However this all changed when I was about 15. I suddenly fell into a depression of sorts, I couldn't feel emotion besides sadness and remorse, I fell into wicked habits, lust and anger took hold of my heart, the echoes of which still torment me in passing moments to this day, I couldn't feel God's help and presence though I kept up my habit of praying, at one point I even denied that I was a Christian in order to justify my hatred of someone (If ever I had a fall from grace, that would be it.)
These trends kept up for around a full year and a half. One day I just began to meditate on certain aspects of my life as a believer. I realized I hadn't followed Christ's commands as I ought to have. I was ashamed to call myself a Christian when people asked, my reluctance to be baptized was in part out of social awkwardness, I hadn't partaken of the Lord's Supper because I hadn't been baptized, I wasn't any longer an active member of the Christian community, etc. I just realized there were many fundamental areas in which I failed due to my own stubbornness despite all the gifts God gave me. Then a few weeks after that, it was almost like I had a quiet, but present "whisper" in my heart to become everything that I wasn't. I thought deeply about everything, and found a pastor whom I trusted and had him baptize me, and I've done my best to share Christ when I feel it is reasonable, and I've been heavily involved in the church, at least compared to what I was, and while I still stumble and still feel some of the darkness that I felt in that year and a half, ultimately I know God has returned His gaze to me, and I can feel His spirit in my heart, and I am ultimately happy. My fears that I had, that of death or of catastrophe, even my social anxiety to an extent are faded away for the most part, I have a better perspective on life, and I no longer feel depressed.
I'm not sure if this is what you call a Dark Night of the Soul, but that's what I consider mine. I know hearing my story probably doesn't help, but hey, at least you know something about a random guy on the internet....That's good...right?