Death can be felt too.
so to feel nothing-be emotionless, senseless.Be a Cold Hearted person.
Seriously i love such cold character persons(not in my life though :)), cuz they be like having "who da fck r u face" , "i dont care any more face".
In simple Be Like SAITAMA (One Punch Man).
or if u r a give up kind of person, then jst go & listen to Dharma King Creation's Death song[cultivation chat group] .