Trouble With Sleep

I don't know what my problem is lately but I just fight sleeping at night. It is nearly 2 am and I just don't want to close my eyes. Perhaps I just enjoy the stillness of the house while the children are sleeping, perhaps it's the fear of the new day and it's challenges. Perhaps its too much dr. pepper. Don't know but I am so glad we have late church and so thankful I have a husband who treats me like a queen and let's me sleep in on the weekends.