Do you as an adult ‘sleep through the night’ ?

Thanks for the tips, but that doesn't work for me. If I'm too cold in bed, I struggle far more to sleep. Like, it takes me HOURS to get to sleep. And 'too cold' for me, is often too warm for most people. Even in the summer, I typically have to wear socks in bed, and often a short sleeved top, and long sleeved top (and this significantly reduces the amount of time it takes me to sleep). I think it might be partly because I'm a bit of a scrawny thing who doesn't produce much body heat (I've been flirting with the line between a low healthy weight and underweight since my husband left a couple of months back). I have terrible circulation (I get Raynaud's in my fingers where a couple of them suddenly go completely white and numb). Sleep was always a big issue for a lot of service users in my old job (and for my kids), so I have loads of techniques up my sleeve: breathing exercises, tensing and relaxing/grounding exercises, having a notepad and pad next to the bed so that if there are things I'm anxious I'll forget or thoughts I get stuck on I can write them down to clear them from my brain, having a good predictable routine, trying to meet my sensory needs, having things to 'redirect' my brain (normally, like you say it's a sort of world building, but also e.g. choosing a theme and then thinking of something connected to it for each letter of the alphabet), no caffeine after 1pm etc. etc. It doesn't help. Or, at least, it doesn't magically make my sleep as good as the average person's (it can at least help enough that I'm not still awake until 1am every night these days like I was in my younger years). I really do think it's an autistic brain thing (which is absolutely not to say all autistic people struggle with sleep - my dad struggles with staying awake, and he's obviously autistic!). My brain is just wired differently. It never stops. I never don't have a million thoughts in my head all at once (and, yes, I do yoga and have tried mindfulness etc.). And my sensory needs mean I'm almost always at least a little bit uncomfortable most of the time. Sometimes there just isn't a fix for these things. I was hopeful that accessing help for my mental health would help, but the NHS has nothing to offer except pills that don't help, and the private route I'm trying to take through my ex's insurance is proving to be far more work than I'd hoped (in part because my NHS GP doesn't know how to do referrals to private, and offered me two unsuitable options - one that I know from experience would be actively damaging, and the other doesn't actually accept referrals from the provider I'm with...).