You can read Jon Kabat-Zin's Mindfulness for Beginners to learn how to do mindfulness. This book tells more about what mindfulness can do for you.
I put off reading this book for a long time. Partly because it's so thick. Now, I've listened to the audio version and never once noticed how long the book is. There's great stuff and stuff that may surprise you. For example: Mindfulness has no goal. So, even though the author talks about stress reduction, pain management, etc., those are gravy.
There are some people who are not able to sit with their pain. It's not easy for anyone, but certain folks have a particularly difficult time doing it. They may require actual in-person training.
I've studied Buddhist texts on mindfulness and Kabat-Zin brings the most pertinent aspects to non-Buddhists in a way that works as well. One major lack, however, is the interconnectedness with other teachings that are needed to help with sitting with unwanted emotions.
When it's all said and done, mindfulness is at its core paying serious attention. This is a great introduction and intermediate level text in the practice.
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