Hi taraz. I think my passion has changed over the years to not enjoy what I do but to fix me financially. I have a passion now to fix my life and this has driven me to achieve things I wouldn't have thought possible. You sell yourself when you are passionate as you believe in it so everyone else gets carried along with it. I am the most passionate person I know as others don't have the belief in themselves.
This should always be the case for everyone perhaps.