Hi MN Mom, I hope you are checking out other posts, where you will see that many people are struggling with similar issues.
It might be good to check out whether you are situationally depressed solely because of insomnia, or whether depression preceded insomnia. Early morning awakening is a classic sign of depression, often treated with antidepressants.
And again if you check out other posts, you will see that sleep anxiety is a big driver of insomnia, as in “I can’t sleep, which makes me anxious about how am I supposed to function like this,” which leads to continued worrying and poor sleep, etc.
Hard to remember, and easier said than done, is letting go. Because effort doesn’t work. Sure, there is sleep hygiene, like don’t drink lots of coffee at night, but for the most part you can’t make yourself sleep.
For what it’s worth, I used to get super anxious when I woke up in the middle of the night: will I get back to sleep, how can I make it next day if I don’t?! After many nights like that, I had to acknowledge I had always made it through the next day, somehow. Call it a 100% success rate, though I certainly would have preferred rested days.
I get back to sleep more often lately, but not always. If I can avoid freaking out about it, it usually doesn’t go on for several consecutive nights like it used to.
Martin covers these points and a lot more in his podcasts and course.
Take care, you are no way alone in all of this.