Who am I?? This body? Self (आत्म), Id, self confidence, self respect, Ego??

No, we are none of those.

Point : I am not this body. I 'have' this body.

Once you put that in every thought and action you have, you would have dissolved the 'ego'.

Then, Confidence, sense of individuality, sense of achievement, sense of knowledge, sense of he VS me, sense of swabhimaan...all other senses...become this body's.. And those too dissolve away slowly. Because 'I' of your body is no different than the 'I' of any if the other 7billion people. They are same...they are all just an 'अंश' of 'HIM'. All those senses become meaningless. Then you start seeing the body as different than you. You have to have the body complete it's actions allotted while on this 'इह लोक'.