For those who have trouble falling asleep quickly I recommend good earplugs, a quiet place where you can nap undisturbed and a dark opaque towel or cloth with w

For those who have trouble falling asleep quickly I recommend good earplugs, a quiet place where you can nap undisturbed and a dark opaque towel or cloth with which you can cover your eyes and block light completely. Given that, there's little to prevent sleep once you've settled in.