What are some natural remedies without medicatons for sleeping at night?

I’m prescribed lunesta, but i don’t take it because it leaves a terrible taste in my mouth all day the next day. What are some better ways to help me sleep at night? I usually just end up staying up for 2 or three nights straight and then i sleep really good that next night. but i wish i could actually sleep good every night. I hate taking medicine though. so anybody know any natural remedies. I do drink coffee but only in the morning. You don’t think i should give up coffee do you?