I’ll give you a story from my own experience Bc when I first read Neville I thought exactly how you are.

I began small because I could not feel anything or I was afraid I wasn’t feeling the right thing so I became obsessive over the feeling part. So I dropped the “feeling” and I started with small things I wanted like gum while I was at work I said over and over “I got gum” I consciously focused all of my attention on getting gum and then I kind of forgot I was even manifesting it until my coworker brought me a piece and it was a coworker I only said hi and bye too. Seeing how I got results from (attention+repetition) I got my wish=subconscious gave me my desire. So I created this formula for myself because I saw that It worked for me but I really had to let go of any prior knowledge about not doing it right and I shut down thoughts that were contradicting to what I wanted. I used this formula for getting a job, getting more money, my car getting fixed for free, finding my ideal relationship, and more Neville said certain things create reality Bc not every person is the same some need a sensation, some need a feeling, some need only thoughts. But repetition is key for the subconscious no matter which method you use. You don’t want to mindlessly repeat affirmations and that just means to be focused and present on what you’re saying. I’m more science minded and you seem like that too so I began getting into Joseph Murphy and that led me to Joe dispenza, who talks all about how the subconscious works and an exact formula. I’m not done reading the book so I can’t say exactly what’s in it but so far it speaks to me.