Saving Someone to Save Yourself:

What if you had to save someone to save yourself? Maybe you were shipwrecked with a doctor that was seriously injured and you had to save the doctor because you had appendicitis and needed surgery?

But what if it was something less urgent? Maybe you needed a reason to live. Deep down, you felt it necessary to have a justification for your continued existence. Even though you didn't consciously realize it, helping someone was the justification. Perhaps it was essential for you to forget yourself for awhile and believe you were someone else, someone good.

And when you stopped believing, you died.