What really helps is silicon earplugs (they warm up to body temperature and mold to fit, so comfortable I've forgotten to take them out until I'm half way to work) - a lot of my issues are I require silence to sleep and stay asleep and the modern world just isn't conducive to that at all.
Do you have a thick blanket then? Or are you just covered with a thin bed sheet while the air around you is 65 degrees F (18 degrees C)? That sounds like it would be freezing.
2) I can't sleep with few or no blankets anyway. I mean I could probably adjust to it over time, or if I'd hiked 20 miles that day I bet I could, but I certainly can't right now under ordinary circumstances.
I don't start to think a room's too cold for comfortable sleeping until it's under like 60F. My sleep gets worse if it's over about 68.
- Temperature control. I sleep with the AC set at 65, a fan and a BedJet device.
- Blue light control. I wear blue light blocking glasses at night time
- Wind down routine. I am careful not to exercise, watch exciting shows or do anything that raises my hearth rate at least an hour before bed.
- No alarm clock. I have found that when using an alarm clock I invariably get anxious about it going off.
Hope some of that helps.