I think that depends on if you talking about how you personally identify or if you mean tribally recognized/enrollment. Tribes differ in the blood quantum needed to be enrolled; so your enrollment would depend on whatever tribe you are. If you mean how you identify I cannot answer that for you. You shouldn’t feel like you need to ask me, or anyone else, how you identify. I am no authority over you. You know yourself. You know your culture(s), you know who and what you are. If you are feeling disconnected from your Native culture then there are steps you can take to connect with it. If you feel unaccepted because you are mixed race or biracial then that is an ever on-going battle. You must accept yourself and not base your value on however many people will agree with you/accept you.
Edit: and remember there is more to being NDN then just an identifier.