Answer:
Pass on your DNA to your offspring and if they do the same, generation after generation, there will be a part of you that may never die.
Also, if you are remembered, generation after generation, this is considered a form of immortality by some.
From a spiritual perspective, many believe that your spirit will never die.
* well we are humans, its impossible to never die in this imperfect world. We all die, wether we like it or not.