An Alternative View: Sam Harris is an atheist with a passion for mindfulness
Sam Harris is an author, neuroscientist and philosopher is somewhat controversially recognized for his strong atheist beliefs. Sam has one of the most unique stances in history due to his outspoken views against religion combined with his passion for the ancient eastern spiritual practice of mindfulness. He eloquently and seamlessly explains in this video how you don't need to have any religious or spiritual beliefs to practice mindfulness and he highly promotes it's benefits in a secular world.
Guided Mind Clearance is also suitable for everyone, no matter what their spiritual beliefs. There are some aspects of spirituality included in the technique (including mindfulness) but even a person with strong atheist beliefs will be able to embrace it. The only thing needed is the ability to visualise, and if you think you can't visualise then "don't imagine a pink elephant" :)