HI. I really sympathise. I had a bad bout of insomnia some months ago. I would advise having a chat with your GP and maybe getting some basic bloods done; even a mineral deficiency could impact on mood and sleep. For me it was anxiety and then I just got in a downward spiral of thinking I couldn't sleep. I did manage to get myself out of the cycle and for me the following worked....no caffeine after midday, replaced with camomile. Don't eat too late (alcohol dosn't help me too). I rejiged my room to make it more relaxing and different...bought a new cosy lamp from Ikea, painted the walls mushroom, new rug..changed the direction of my bed....not big things. Also do a Mindfullness App during the day (not at night) with tips for relaxing. But do go to the docs. I went on Nitrazapan for two weeks as my insomnia was severe but it did get me back into the sleep cycle. Write a plan and be proactive. It is hard to do if you are tired though.