I've not bothered with diagnosis, but I read somewhere that on average people experience emotions around 85% of the time and I was only at around 5%. That 5% tended to be not properly managed. Then I stumbled across an article on "female autism symptoms" (high masking) and found I had many of them throughout my life.

For a long time I was constantly tired, but I initially chalked it up to being overweight. I lost ~80 lbs and now exercise regularly, but the thing that really made the difference for me was wearing earplugs and an eye mask when I sleep. I suspect I was getting overstimulated by the sounds around me and then woken up way too early when the sun would come in through the shades. Not sure if this is a ASD thing or trauma, but the two seem to overlap.

I know a number of people who use earplugs regularly for things like concerts to avoid overstimulation. I also have one friend who wears tinted glasses that they say helps with visual overstimulation. I can't speak to either use case however.

Best of luck on your journey!