A Tony de Mello Inspiration

Am I my thoughts, the thoughts that I am thinking? No.  Thoughts come and go;  I am not my thoughts.  Am I my body?  They tell us that millions of cells in our body are changed or are renewed every minute, so that by the end of seven years we don't have a single living cell in our body that was there seven years before.  Cells come and go.  Cells arise and die.  But "I" seems to persist.  So am I my body?  Evidently not.