
It's easy. Everything I think and feel and believe and perceive all make up my identity. Including the knowledge that I have an identity that is made up of my thoughts and feelings. This identity is "the individual".
If you cease to be aware of yourself as an individual, then you are no longer that individual. In which case you are no longer you.
If (big if), any part of you survives death, it's only relevant if a part of your consciousness is aware of the fact.
--A