What is a muslim, he or she who submits their will (our will belongs to us and we have a choice, this is also part of, the life is a test and dual nature we either choose to be good and choose to be negative (bad) but being good without knowing your purpose is not enough. That is being ungrateful to your creator. We all are ungrateful sometimes to our creator, some more than others but our creator still loves us but lets make one thing crystal clear, on the day of judgment if your religion was not ISLAM then you are in very big trouble. I mean serious trouble.