I recently read that if the behavior is helping you go up in kedusha, it is worthwhile, if a behavior is not – then it is not worthwhile, and poses a danger to your soul.
Can someone define the Modern Orthodox hashkafa? I’ve always thought it was a lifestyle dedicated to keeping all the mitzvot while having a large involvement in the secular world, primarily for parnasa. But I guess also other things like going to opera, and outwardly wishing to not draw attention to their identity as Jewish, e.g. no beard/peyot, tzitzit in, etc.