I too was/am emotionally numb. I have found that the more that I work through things in therapy, the more I am able to allow myself to have emotions. For me, my emotional numbness was a safety measure. By not allowing emotions, I was also not allowing myself to experience the trauma. I am still numb sometimes. my psychiatrist told me that as I start to work through things, the numbness may start to subside. It has, which is good and bad. I am feeling some positive emotions for the first time in a very long time, but am now also feeling the pain and agony from the trauma. I don't know if any of this helps you, but I wish you success in your venture.