human
I'm having difficulty sleeping at night. Do you have any tips for getting better sleep?
assistant
1.  Try to establish a consistent bedtime routine, and stick to it every night.
2.  Avoid caffeine late in the day, as this can make it harder to fall asleep.
3.  Exercise regularly during the day, but not too close to your bedtime.
4.  Reduce or eliminate blue light exposure from screens before bed, such as using an app on your phone.