"Find what you love and let it kill you." - Charles Bukowski
One of my favorite things to do is take the contrapositive of famous phrases to see how they can be interpreted.
"Do not let kill you the things which you do not love."
Another possible way to write it:
"Live for the things you hate." (Presumably so you can change them.)
I always took this phrase to mean that if you find something worth living for you have found something worth dieing for.