Grounding has been essential at times in my sessions. I have been known to dissociate so deeply at times that without my therapist helping me find my way back to the present I was terrified and simply not there. No real therapy can go on when you are so dissociated that you are mental and emotionally not even there. Those skills I have been taught made my therapy more effective AND I learned to use them on my own when my therapist is not there to help me. It can be absolutely life saving.