if it helps, you are not alone. i am in the same boat. insomnia , due to past trauma. do you enjoy meditation? darkness in your room? i find sometimes having a movie on in the background can be of enormous help. so you dont "feel" alone, and it gives your mind something else to focus on, whilst trying to sleep, that does not contain negative thoughts and feelings. for instance, i listen to star trek. when its finished playing, the pc turns it self off, and i am usually sound alseep. this does not always work. but i hope it helps you. i also take melotonin, which is a natural sleep hormone, prescribed by my GP. just remember, you dont have to go it alone
