What does the Bible say about self-gratification / self-pleasure

What does the Bible say about self-gratification? What does the Bible say about self-pleasure? Are self-gratification and self-pleasure always sinful?

FLESH SERIES: What's Up With Masturbation?

So What Does the Bible Say About Marital Sex? — Center For

15 Bible Verses on Self Control

Is it ever not a sin to masturbate?

What does the Bible say about masturbation? Is it a sin to masturbate? - GotQuestions.org Podcast Episode 143

What Does The Bible Say About Self Satisfaction

Self-Gratification: Gift or Sexual Sin? - Lucy Ann Moll

Exposing the Enemy's Plan Against You

The Pursuit of Pleasure

Lovers of Pleasure More Than Lovers of God