Dear Rajat,
The conviction that You are not the body will come,all Your efforts in the search of Truth,,meditation,reflections,and in the end,selfenquiry itself will bring it. Do not worry. All Your doubts will go with it.
Sure, there is no second or other 'I'. Bhagavan many times pointed this fact,and asked us to see for ousrelves what this 'I' is and does it exist at all. Off course,in this very search we will discover many apparent I's,and this was my difficulty also. And this difficulty will leave only when we understand that any 'I which involves the mind is false 'I.
You have asked: "But which I is the I in I Am pointing to? -That I which You truly are. And You will recognize false 'I' easily with time,so to say, since the Self is free of mind, and all conclusions and knowledge are irrelevant since they belong to mind realm and this very error that we are the doers of all actions. Where no mind is,there is the Self.
Dear Rajat,Your entusiasm for this search is what is important,so i feel You are going in good direction if You only keep this inner fire bright.
With love,
edited-
Like our friend Kskat said 'We need to keep it simple. Whenever we catch ourselves in the net of thoughts,we are out of selfenquiry.
Sure,this process is needed also. There is some power in it too. After all, everything is the Self only.