Your experience sounds familiar to my own. For most of my life I have felt "invisible" or like people simply don't care, including my mother. This is a major issue that I am still working on. My therapist suggested to me that I take extra good care of myself now by giving both my adult self and my inner child the love and care I've desired from other people. In the end, our selves are all we have. We are all we can depend on. Looking inward for support may lessen the pain of not being supported by external sources. I am hoping she is right!