If your mind is over active, it's helpful to write down what you're thinking, especially if you're thinking about all the things you have to do the next day or if you're stressed out about something. When you write it down, you are giving your brain permission to stop thinking about it because it's written down and you won't forget it. I also find that regular exercise is helpful for me to fall asleep easier , though exercise right before bed isn't a good idea. I think part of the reason I wake up so much at night is because I have a cat and she makes noises and also snuggles me a lot so I'm always waking up to give her a kiss
Total darkness is also important and keeping the room cool is good for sleeping. Alcohol is the worst idea for sleeping so don't try that. It may cause you to fall asleep fast but you won't have a restful sleep at all!