Better Self Series books set

1. How to Write a Sentence

2. How to Train a Happy Mind by Scott Snibbe

3. The Self-Compassion Skills Workbook

4. The Lifelong Learner

5. How to Make People Like You in 90 Seconds or Less by Nicholas Boothman

6. The Science of Intelligent Decision Making by Peter Hollins

7. The Life Coaching Handbook by Curly Martin

It appears to be a curated set of books on self-improvement, psychology, communication, and learning.