Cut back on caffeine; don't drink it past noon.
Go to bed at the same time every night.
Keep your room cool and dark.
When you get in bed, turn the light off and go to sleep. Don't read or watch videos in bed.
Chamomile and Valerian root teas are magic.
If you suffer from anxiety, find and utilize healthy coping mechanisms to reduce it. Meditation can be helpful.
I usually fall asleep within 5 to 10 minutes, and sleep 7.5 to 8.5 hours most nights.
In my experience I get a much better shave with a DE than a disposable razor. It's also much cheaper and reduces waste significantly. Cartridge razors are a scam.