One of the first things we learn from our teachers is discernment: the ability to tell truth from fiction, to know when we have lost our center and how to find it again. Discernment is also one of the last things we learn, when we feel our paths diverge and we must separate from our mentors in order to stay true to ourselves.
It is not the end of the physical body that should worry us. Rather, our concern must be to live while we're alive - to release our inner selves from the spiritual death that comes with living behind a facade designed to conform to external definitions of who and what we are.