[dragonwriter]

You cannot “maintain” objectivity, because humans access the universe through subjective experience, and you cannot “avoid bias”, you can only recognize bias in one thing as compared to another.

OTOH, if you want to cultivate a distance from the concerns of the material world that will help you avoid the kind of concerns that would result in having a political affiliation or agenda, there are religious traditions that can probably help with that – OTOH, the same disregard that helps distance you from political concerns may or may not be compatible with the “personal interests and professional responsibilities” that you seem to have as the reason for seeking that. OTOH, if that is genuinely what you value, trying to avoid political affiliations or agendas may not actually be what you want; personal and professional interests are generally where people’s political affiliations and agendas are rooted, rather than being being a competing interest.