Everything originating in the self can be turned against you, yes. This includes your hate for humans, incidentally. The other side of the coin is that everything not originating in you, and seeking to hurt you, can be turned to good by generating a positive instead of a negative response. This bears some family resemblance to masochism, but at least puts the power back in your hands. Learning to wield yourself is painful, but preferable to being buffeted about by the machinations of others.
To feel is to give yourself over to chance, and let it play with you as it will. To live is to feel, but not become the feeling; to contain, not be consumed. Why do I believe any of this? I don't, really. I just don't know what to say to all your whiny yabberings. Dear God. :P