this is a difficult subject.some think we walk in spirit as in flesh to curve the flesh side.others think that we could help the population through spirit union.dna etc.less disease.
me i have no idea,i can,t see the spirit world in that way.
there are that many stories or lies it is difficult to know the truth.
i have had trouble in this area,but the way i see it if i can,t trust the holy spirit,who can you trust.?
i tend to leave that area blank.so to me walk in the spirit means to walk according to Christ.with love.