Resistance…a feeling or an action?

I was just listening to the diamond call, where there was a discussion about resistance. I experience a TON of resistance, but it hadn’t ever really occurred to me that it was a feeling. I thought I was resisting the feeling that came up from a thought, which makes resistance the action (followed by other more tangible results, like buffering.) If resistance is the feeling, then how do I get to the feeling underneath it?

Can you clarify for me how to best examine the resistance that I feel and where it might go in the model? Thanks so much!