The Divine Hours: Prayers for Summertime by Phyllis Tickle
This book is a bit different from the rest. It is not meant to be read from cover to cover. Tickle has collected readings and prayers to help as you "pray the hours". The keeping of Divine Hours is a spiritual discipline that incorporates prayer at several intervals during the day. The book offers prayers for each part of each day during the summer. This book has revolutionized my prayer life more than anything else I've tried. It's an amazing resource and well worth your time!