The Christmas break is a great time to relax, recharge, and refocus. One way to do this is by reading books that can help you develop a positive mindset and cultivate a sense of well-being. Here are some good mindset books to consider reading over the Christmas break:

"The Power of Now" by Eckhart Tolle: This book helps readers to live in the present moment and find peace and happiness. It teaches techniques for quieting the mind and living in the present, rather than getting caught up in negative thoughts and worries about the past or future.
"Mindset: The New Psychology of Success" by Carol S. Dweck: This book explores the concept of fixed versus growth mindset, and how adopting a growth mindset can lead to greater success and fulfillment. It provides practical strategies for shifting your mindset and embracing challenges and setbacks as opportunities for growth.
"The Subtle Art of Not Giving a F***" by Mark Manson: This book encourages readers to focus on what truly matters and let go of the things that don't. It teaches how to cultivate a healthy attitude towards failure and setbacks, and how to prioritize your values and goals.
"The Four Agreements" by Don Miguel Ruiz: This book offers a simple yet powerful code of conduct for living a more fulfilling and authentic life. It teaches readers to adopt four agreements - be impeccable with your word, don't take things personally, don't make assumptions, and always do your best - as a way to transform their lives and relationships.
"The Happiness Project" by Gretchen Rubin: This book chronicles the author's year-long experiment to increase happiness in her life. It offers practical tips and insights on how to cultivate happiness and create positive habits, as well as reflections on the nature of happiness and what truly matters in life.

Regardless of which book you choose, taking time to read and reflect over the Christmas break can be a great way to cultivate a positive mindset and set yourself up for a successful and fulfilling year ahead.