Prompted by Gromit's thread on whether we can choose to feel a certain way, I would like to consider what happens when we choose not to feel. By this I mean, not to replace feeling A with feeling B, but simply to stop feeling A. This could be specific and situational ("I don't like feeling defensive when I receive criticism."), or more general ("I don't like feeling angry, or giddy, or . . .)
Is there a downside to stopping a feeling without replacing it with something else? Is that even possible, or are we always feeling something, even if we do not realize or recognize it? Can we stop too many feelings, such that we end up not feeling much at all? Is there such a thing as an emotional vacuum? If we prevent it from being filled back up with emotions, is it filled by something else?