Feelings are neutral

At the end of my last SCS session, the coach said feelings are neutral. We had been talking about allowing the feeling of rejection when I get a NO having made an offer, and how ultimately allowing this feeling will lead to results (the result of a YES). I totally get the allowing part.
My question is – are feelings ever neutral? I understand life is 50-50, there is no feeling that I cannot survive. I don’t need to judge a feeling, I can just allow it. But are feelings neutral? When I feel sad, I feel sad, not neutral. Can you offer clarification?