I agree @radicalmothering, to me personally, biological sex is non-negotiable and when someone cannot accept their biology it is a mental illness and should be treated as such. We cannot be expected to change the literal definition of these words (sex and gender) because a small minority believe they're something they're not.
Gender on the other hand, again to me, is whatever you choose it to be, like you said, it's reflective of your personality. Same for sexual orientation or even the lack thereof.
Welcome to Steemit, followed because we obviously share some views!