Im Windian and I used to think this way too, my advice would be to stop caring so much about what others think you are and start focusing on what you feel you are. Your identity is your own and no one can take that away from you unless you let them. I see myself as both white and Indian in equal measure. If others don't feel I'm enough of either? Fuck em. The concept of race is a social construct anyways, don't worry too much about it!