Transformation of behavior is more like turning a cruise ship around than "turning on a dime."
When working with people who have a conviction for sex offense, it's important to be realistic with your expectations and theirs. What took dozens of years to put in motion will take years of focused, skilled work on your part and theirs to effect a dramatic change of course.
Mindfulness, in its many forms, is a practice that can make that shift more quickly, with more peace along way. Here are a number of ways in which mindfulness can be practiced. As with taking up any new practice, it is helpful to have coaching from one more skilled in the nuance. A mindfulness teacher can help the student navigate the shoals of self discovery while celebrating each new sunrise.
A body scan can be a five minute exercise or longer. Start with the feet or the head, but take time to focus on each of the prominent parts of the body. Notice the sensation of the feet on the floor, your seat supported by the chair, your hands in your lap. Notice any sensations on the skin, in the joints and muscles, in your internal organs.
After slowly inventorying the body, focus on the breath, the sensation of rising and falling chest and belly, the sensation of breath on your nostrils, cooler coming into your body, warmer on the out breath. Try to keep focused there on your breath, even when thoughts creep in and steal your attention. Be kind to yourself, patient, as the building of awareness and comfort with stillness grows.
Google mindfulness to find other, more detailed instruction, as well as finding others forms of practice. Some enjoy meditative walking - slow, one step ahead in unison with each inhale or exhale.
Some find sitting on a cushion comfortable while others find a chair best. Some find nature a good companion to quiet reflection while others like a guided meditation tape. Some find ecstatic dancing a key to relaxation and release of body and emotional tensions. Be as patient and curious of what works for you as you would about finding the perfect pair of new shoes.