Hate is additive, multiplicative, it corners, it isolates, it kills off possibilities. And, then all you're left with is no one else to hate, just yourself. And, then, nowhere else to turn, and because you are not used to any other form, you will start to turn that hate on yourself.
Surface is not what matters. Surface is what others see. They are secondary to you. When you get thoughts of what parts about you must be so bad, so horrible, that no one seems to be able to see the *goodness*, to love....then, it shall start to matter (if it hasn't already). That doubt, that paranoia, that loathing, will inevitably turn inwards. And, that's one thing that will refuse to stay on the surface, but become bone deep. Just you and yourself...on repeat. You gotta be able to answer to that with a peace of mind (without weighing down), imo.