This book by Eckhart Tolle, I read a few years ago. Actually someone at a dinner party recommended it. She had been in a serious car accident and this book had helped her get through a difficult time. I am one that does not go out and buy any book unless the name keeps showing up in different places. I saw the title of this book again somewhere else shortly afterwards and decided I was meant to read it.
In a nutshell, suffering is a product of being in the past and the future. In any given moment, if you are fully present, it is impossible to have a problem.
I am one of those people who live in my head a lot . I think it is the curse of a multi-tasker. I also handle my problems the same way. I think, worry and try to deal with all of them at the same time. It doesn't work very well plus it gets a bit overwhelming and tiring to boot.
These little glimpses of being present have taught me that there is great joy even in the midst of pain and suffering.