I have this problem too and thats why I am reading this forum at like 1 A M! Well, I hate my life for it too, so, you are not alone in having insomnia or hating your life for it. Honestly I don't have any real advice because I have insomnia in spite of every possible measure I can take to not have insomnia.

There is a lot of advice about not taking stimulants, meditating during the day, journaling, walking each day, I do all that, and I still can't sleep some nights!

I don't really have anything helpful to say except that I agree that it is no fun! And I wish i could sleep every night without difficulty. It seems far beyond my control.