The standard is clear. If something we think, see, hear, or do distances us from the Holy Ghost, then we should stop thinking, seeing, hearing, or doing that thing. . . Because we estrange the Spirit of the Lord when we engage in activities we know we should shun, then such things definitely are not for us.
Only yesterday I was full of worldly fancies, although religion had already some share in my thoughts: glory was still my daydream. Today my hopes are higher, and I covet here below nothing but obscurity and peace.