NVC is factually impersonal and formal. Instead of having a genuine human interaction with somebody, NVC aims to lay out a method of choosing ones words carefully to influence the receiver in the desired way. Nothing about it is casual nor genuinely personal, no matter how many times you utter the word "feel".
Feel free to substitute "friend" with "somebody you treat pleasantly with the typical degree of respect". A manager who uses NVC is little different from a used car salesman who gives firm handshakes and throws around warm smiles.
I think any communication technique that you are just starting to practice sounds unnatural.
Just think of NVC as a tool in the toolbox, for how to initiate a difficult conversation and be understood without being as likely to provoke a defensive or derisive response... that then can grow into that genuine, comprehensive human interaction.
Feel free to substitute "friend" with "somebody you treat pleasantly with the typical degree of respect". A manager who uses NVC is little different from a used car salesman who gives firm handshakes and throws around warm smiles.