Many of the questions you are asking are beyond the scope of seeing 'no self' and the guidance via LU.
I will try to address them a little to assist you.
This is most likely due to "me" battling with depression and anxiety for a long period of time . That's also why it was so easy to relate with the author of "The Power of now" on a personal level haha.
Depression, anxiety and any other unpleasant emotions are something you can address as a separate inquiry. Generally, they don't change at all when realising 'no self'. Although it can be realised that there is no inherent self feeling these emotions, they are still there. We can say that these things are cause by a subtler belief that there is something 'here' which reacts to experiences or reacts to negative thoughts.
The good thing is that these things can be address with further guidance.
Yup. So if there's is no inherent self, then what's perceiving all these sensations?
There is much further too look at if the interest takes you.
Built within your question is the assumption of duality - That there are definitely two things, one perceiving and one being perceived. You inquiry would be to continuously examine this assumption.
As mentioned, objects in experience will be perceived 'at a distance' from a location where experiencing appears to be happening and this does not change with simply realising 'no inherent self', but this can be examined also in further guidance- There are many further realisations to be gained.
So who's/what's aware of our thoughts,sensations etc?
Would a conceptual reply satisfy you? Another belief to cling to?
Or would it be better to examine your question and realise the answer experientially? It is possible.
Maybe the question you are asking has an inbuilt error caused by language itself - That thoughts and language can only deal with separation, duality and things that have opposites by which they can be known by.
Since you appear confident, there are a further six questions I can ask as part of this process.
Here are the first three of the six questions.
1) Is there a separate entity 'self', 'me' 'I', at all, anywhere, in any way, shape or form (other than in the content of thoughts of course)? Was there ever?
2) Explain in detail what the illusion of separate self is, when it starts and how it works from your own experience and understanding. Describe it fully as you see it now.
3) How does it feel to see this? What is the difference (if anything) between now and before you started the guidance?