The "I" exists in all these attachment, names and forms,
thoughts, emotions, etc. When there is "I", there will be gain and
loss, worries, anxiety, all forms of mental negativities,
resistance, aversion to things and events. Basically whatever you
identify with becomes your "I" - body, personality, thoughts, etc.
The "I" is illusory, so if you want to be freed from birth and
death, rebirth, etc, the bond of "I" must go.