Paul Tripp and Ed Welch are authors in that special category: anything they write is good and worth reading. So it's always good news to hear when one of them has a new book out. Even better when it happens at the same time!
Welch's new book is called Running Scared: Fear, Worry & the God of Rest. (You can read chapter 1 online.)
(With regard to Welch's book, When People Are Big and God Is Small, if you don't own at least two copies you're a backslider [to steal a line from George Verwer]!)
Paul Tripp's new book is entitled A Quest for More: Living for Something Bigger Than You. (You can read chapter 1 online.)