The short answer: Nothing, we tend to blow things out of proportion at night when there is nothing else to think about.
Here’s an exercise worth trying. If anything is giving you anxiety, that oh-so-special tightness in the chest, especially at night, write it down.
Two weeks later read what you wrote. I guarantee you will laugh at yourself at what was soooo important two weeks ago, which will seem like an eternity in the past.
Of course, it’s what is bothering me right now that’s really important….