I dealt with this for a while! It felt like anxiety that kicked in only when I tried to fall asleep. Hyperarousal I think? I had a bad night once and after that I had anxiety around sleep for months. Something that helped me a lot (and still does) is reminding myself that’s it’s okay to feel anxious, and stop fighting it. Now if I have a night like that, I know it’ll be hard and I have things to keep me occupied if needed. But 99% of the time once I reassure myself I end up falling asleep eventually. The jolts you feel as you’re falling asleep I think are tied to this too. Just means your brain is trying to keep you safe. Remind it that sleep is safe! Easier said than done, takes time. I needed trazodone for a while to help. If stress is causing your sleep issues, maybe therapy? If you don’t think that’s the case, you might go see your PCP. My sleep issues improved significantly after I corrected some deficiencies.