Self Denial to me is a feeling mixed with a lot of negativity, and I believe that those two cannot be mixed, as your intuition feels more like guidance. One you have 'heard' it on a few small things you will be able to recognize it, much like for example your mother's voice in the crowd.
It's difficult to be explained, and I am sure you have heard it before. Have you ever had a past lover that you didn't like something about him, but you were hoping you are wrong and you are just fooling yourself, but then it turns out he was really like that? I think most of us have heard it at least a few times.
Btw it's easier to ask yourself those questions, when you wake up. At that point your brain doesn't interfere much and you are a lot closer to your subconscious. See how you feel about them and go from there.