Your belief in oneself makes you a believer. It has a streak of positivism whereas an atheist can be full of negativity and deny things because he has programmed himself to deny all things. If theism is a label, atheism is also a tag.
Human mind is forever stuck in a simplistic binary of theism and atheism. Non-belief also has innumerable shades. Atheism closes all doors and possibilities. Human existence is not dictated by binaries and dichotomies. There are shades and sub-shades to whatever is seen or perceived by the senses. So, Camus was bang on when he proclaimed that though he had no faith in god, he still wasn’t an atheist.