Understood, and that's generally what I've been taking away from it, but I have a mind towards security and while I don't need to fully understand it to be a developer, I must understand it for my own purposes, as I would (1) feel completely ashamed of myself for blindly following tutorials, especially on this topic, and (2) would not want to adopt the liability that comes with implementing an insecure system for a client that has a bigger wallet than me and wants to crush me financially even further for making a mistake that harmed their customers or business. Is such a scenario likely? I don't know; doubtful, but still, I'd feel like an impostor.
Truthfully, the spec itself doesn't seem too difficult to understand; it's mostly my inability to stay focused that causes me the problems I deal with when studying and coding. Perhaps the true culprit of our times are browser tabs; the more I have open, the more overwhelming it becomes to consume them.
As for caffeine and anxiety it's better than the depression that I feel with a lack of caffeine. Caffeine also has a kind of analgesic effect, or rather maybe the lack of caffeine causes me to have more pain in my spine for some reason. Sleep isn't too difficult with chronic melatonin use. Your body never adapts to melatonin as with other substances, so you can maintain the same dose (5mg in my case) with consistent efficacy. I'm out within 30 minutes after taking melatonin.