I...

The letter "I" is associated with Ego. People desire to boast of themselves by stating

I can only do this.
I was the executive director of the concern
I am the only person who can work.
Because of me the company exists.

If "I" is removed  (I is ego) from the a person he is fit for salvation.
Ego is false "I". Ego is always associated with feeling of I.
Unless this "I" is dropped, mind cannot be elevated and cannot be controlled.