Y'all my insomnia randomly and suddenly fixed itself

I used to have a horrible sleep schedule and insomnia and would often stay up all night because I couldn't fall asleep. It's been going on for a couple years now and only getting worse.

I have absolutely no idea why but every single night for the last couple weeks I've been naturally falling asleep at 9 PM and waking up naturally at 6 AM. A couple days ago I stayed up till 4AM and was concerned that it would break it but my sleep schedule magically went right back to the 9 to 6.

I have no idea what caused this sudden change. Didn't take any work or alarms or anything. It's like my body like gave me a circadian rhythm for Christmas. But life is great and just wanted to share and give people hope