Sorry you are going through this void it feels awful. I sometimes go through phases of feeling like I'm watching my life in the 3rd person as if I'm not in it. Like watching myself in a movie. Only thing I do during these phases is to try to stop my mind from wondering about the past or future and force myself to concentrate on the extreme here and right now and drown out the noises. Doesn't always work and sometimes it does but it can give me temporary respite when I feel overwhelmed.