Egoic voice in head

It has been observed, all the egoic voices heard is same as the younger brother. When any positive resolution is made, for example, fasting on certain days, doing japa, abstaining from certain foods, going on pilgrimage & all positive things that will increase spirituality. This voice of younger brother is troubling since many years. Tried mindfulness, however this voice always triggers pain in the body, could see the soul very sad, as if any tantra is done. Please suggest any Buddhist way to get rid of these voices. **Edit**:Just wanted to add something more to this experience. It's not just voice sometimes, it is observed the body is overcome & actions of the body are controlled by another spirit(same as the younger brother). Kind of spooky, but it was observed many times.