What is the Self?

What is the self? To many, the answer might be so obvious that they haven’t given it much thought. Others might proffer up one idea after another and finding each imperfect to an extent that they wonder if the self even exists, and if it does can it be defined.
The physical self is the awareness of our bodies when that body is in great pain. We can block our awareness of the physical body and replace it with other levels of awareness.
The emotional self is being aware of oneself on an emotional level because emotions often gets undervalued.