Stuck with self-love, acceptance, and confidence

I am currently in the process of building a business.
According to my coach, I am doing all the “right” things and I have great knowledge.
So far, I have not gotten clients. We went through my offer etc, and what we found out was that I am missing authenticity.
The personal touch.
Whilst I consider myself quite intelligent in general, I am not able to grab this concept.
So, the things for me to work on are authenticity, self-love, acceptance, and also self-confidence.
I have never even thought about those.
I am happy to dive into these subjects and have tried things like: TDLs, speaking to people… but I still cannot “grab” it.
I am looking for some guidance about what I am missing here.