Calming the sensations means turning the intensity of these physical symptoms down allowing you to both tolerate the feeling and to transform your thinking, unlocking potential and revealing possibilities that you might otherwise not see.
Your power lies in the fact that it is possible to manage these sensations, to influence your physical sensations by working with those under your conscious control. Learning how to manage your own breathing, body posture, muscle tension and your focused attention.
But remember, the result is not only control of these sensations, but through a feedback loop a regulation of, and transformation in how and what you feel. So take the time not only to practice the techniques but also to understand the process through which it governs your emotional well being and your mindset.