How to be Catholic during your rebellious years is How's attempt to look back on the paganism of the past two decades of his life. Whether you think 'the Christian thing' is a crock or have gotten lukewarm about it over time, How hopes for you to keep our Lord Jesus Christ in your heart.
If you're hoping to get the gist of the book by reading this description, you're in luck:
Pray more. A lot more. To Jesus and Mary.