While my sleep habits are far from perfect, here are a few recommendations based on my own experience:

• Install the f.lux application on your computer and enable the Night Shift setting (if you have an iPhone) to gradually reduce the intensity of light coming from your devices leading up to your bedtime.
• Stop drinking caffeine as early in the day as possible. The half-life of caffeine is 5-6 hours, so try to minimize caffeine intake 6-12 hours before your bedtime (the earlier the better).
• Turn on a portable fan to create white noise and drown out sudden noises that may wake you up or prevent you from falling asleep.
• Place a custom-cut sheet of hardboard in your window to keep your bedroom as dark as possible.
• Set aside 30-60 minutes before bed to relax. Turn off electronic devices, write down anything you may be worried about, take a bath, drink some herbal tea, read a book. Find whatever works best for you!