John Piper is famous, and in some circles or infamous, for his philosophy of life called "Christian Hedonism." I've considered myself a Christian Hedonist since the mid-1990s. With some qualifications, I still do. Here's a link to my blogpost where I explain areas of Christian Hedonism where I think it needs some minor tweaks and corrections.
Here's the webpage on John Piper's website that introduces Christian Hedonism:
https://www.desiringgod.org/topics/christian-hedonism#
The three main books that serve as foundations for Christian Hedonism are:
Desiring God: Meditations of a Christian Hedonist by John Piper
The Pleasures of God: Meditations on God's Delight in Being God by John Piper
Future Grace: The Purifying Power of the Promises of God by John Piper
[The revised edition is very different from the original version. Piper got some flak for his phraseology and teaching in the original version. So he made some changes that he thought corrected some of the error of misleading, or unbalanced, or imprecise statements in the original.]
See also the book:
Pleasures Evermore: The Life-Changing Power of Enjoying God by Sam Storms
John Piper's website is Desiring God
Sam Storm's website is Enjoying God
