I've always wanted to have a twin.
When I created my profile page here I described myself as an
insomniac poet because most of my poems and songs have been written between midnight and dawn when my body has resisted sleep. This is when the majority of my posts on this forum have been written. Social media tends to draw me in, inciting me to remain, and therefore intensifying rather than relieving insomnia. I find it helpful to disconnect from my day in some way, such as by putting my focus on writing a post here. I've constructed enormous walls of text, haha, and in the process decompressed.
I also journal late at night but instead of chronicling my day I just write whatever I'm thinking of at the moment. I visualize it as scooping out all the thoughts swimming in my mind that are like a sea of goldfish in a too-small jar and releasing them.
I could have written your precise post yesterday; it expressed how I felt verbatim. It's after 1:30 in the morning now, and I hope to not feel the same way tomorrow. I'm actually here to power down my brain. At least tonight I'm struggling to sleep because I always feel a bit hyper with the whole weekend ahead of me, rather than not sleeping last night due to anxiety about a major test (that went very well!, so I'm relieved).
Are you living in a dorm? Most beds in dorms are uncomfortable, though there are ways to make them a bit less so such a mattress toppers or memory foam, nice sheets, and a pillow ideal for the type of sleeper you are. I use one specifically for side sleepers, and put a small pillow in between my bony knees. I also used a weighted blanket. It sounds odd, but it's very soothing and relaxing; it feels like being hugged all night. I also find white noise to be helpful. You can get inexpensive sound machines, or use an air purifier, fan, or something similar to create just enough noise to block out sounds from outside without being loud enough to disturb you. It can really help to pull you into sleep. Tranquil aromas such as lavender can be lulling for me as well.
Oh, and serene music that becomes like a lullaby:
I hope you can have sweet dreams tonight.