After experiencing a loss I will never recover from, I find myself numb, but in my case, it's how I am surviving. I still feel, but I have not experienced deep positive felings, like love. I have a cat who has become a support animal. He got out and I thought I might have lost him. How did I feel though? Empty. So no, I wouldn't jump to a sociopath diagnosis too quickly. It might be your survival mode. I would agree it might be good to talk about it with a professional. Personally, I do have a psychiatrist, and she knows where I am mentally.