I agree with your overall message and I think it's very important for us to find an internal source of happiness, satisfaction and stability.

But I don't agree that acknowledging that a label might corresponds to your beliefs ( in the case of religion, political persuasions or other ideas) or to your cultural or national heritage means that you necessarily view that as making you better than other people or giving you additional value as a human being. It happens with some people for sure, but it's certainly not applicable to everybody and claiming that is in a way an attempt to simply the internal worlds of others and by doing so one risks falling pray to the exact believed superiority of the self you are warning about. Of course, that doesn't have to be the case, I'm just pointing out that we should approach such general assertions with cation and doubt and we should give other people some credit before we assume they are simple and self-centered.