I'm not someone who typically has any anxiety issues, more than the "normal" stuff. Had some anxiety issues years ago, but worked hard to resolve and its now been many years. Overall, my mental health is good.
For the last year or so, when I go to bed and start dozing off I will suddenly get a rush of what I can only describes as nerves. I get palpitations, my stomach drops, I sweat, my brain suddenly goes into overdrive about totally normal things (like decisions I've made at work or things I know I need to get done. None of it unusual stuff).
This has the effect of snapping me out of starting to fall asleep and leads to me tossing and turning and getting minimal sleep. I'm now trying to survive on 2-4 hours of sleep a night, I know I need 9 hours to feel okay.
I have sleeping tablets, but they give me restless legs so I tend not to take them and even so, these anxiety attacks are strong enough to even overwhelm sleeping tablets. I just end up awake but feeling drunk.
I'm 44yo of that's important, good job, happily married, 3 teen kids no financial worries and overall have a pretty decent life. So nothing for me to stress over.