I think most of us know the feeling of going to bed to (try to) sleep, with a head heavy from a mix of sadness, hopelessness and worries about something we've been working with during the day that we have not been able to bring to the point to which we would like to have it brought - just to wake up in the morning (after having finally fallen asleep far into the night) with a much more positive view of life. At least I, personally, have sometimes suffered quite a bit from it.
In fact, at one point, the feeling became so familiar that it allowed me to shake it off by calming myself with a simple "Do not worry about it - you know that you will wake up with a much lighter perspective in the morning". Although I know it's a strange meta argument, it has actually proven to be effective - and correct - in quite a large number of situations.
However, my dear friend from my Twitter tribe, Wendy Woolfork, mad eme understand that I ought to modify this large number of situations a bit. So I must underline that at least for me, it has proven to be effective. I am not able to say, that it is a silver bullet for anyone to use - and I recognize that there are worries with such an impact that they will not magically be gone at the break of dawn.
(Translated from Til kamp mod søvnløse nætter)