Still dysthymic despite receiving love/support from family.

My family keeps telling me they support me emotionally and such even after all the failures I've had over the years. It feels alien to me because they've never really explicitly mentioned they love or support me. I kind of don't know how to react to it, and they still give me crap for not acting happy. How am I supposed to react after years of being alienated by them for being gay and later diagnosed as adhd/bipolar?