Sometimes this happen to me. Not everyday, but I experienced this hyperarousal state and my heart beated very fast one night, I woke up at 5 am and wasn't able to sleep because I had many anxious thoughts on my mind.
I found out that when I drink chamomile I sleep very quickly and don't wake up during the night. Also I found a youtube channel about guided mediations (the name is michael sealy), and the voice of the person is so calm, and I feel more relaxed after a while. It's easier to meditate this way because there's a person that tells you what to do, and so I focus on the voice, and not on my anxious thoughts.
Also it will be better to not use devices like computer and phone 1 hour before going to sleep. Instead of staying at the computer you could read a book, or do something relaxing (I'm thinking about...colouring books maybe or something like this...or taking a bath). I'm really bad at following this advice Usually I stay up late with my computer, sometimes playing a game online but my heart beats so fast this way. Maybe I should buy colouring books.