Erm, the only way to know that is to put every effort you can into becoming a deist. "Every effort" is a lifetime of work, so you haven't done that, which makes your statement a statement of faith.
It sounds like you've already decided that you will never be a deist, and so you never will. How is that different from religious belief?
It's different because there is one less thing I have to invent. You might as well ask somebody to believe in a giant hamburger that circumnavigates the earth that only the truly faithful can see. I know you don't see the giant hamburger because you just haven't tried hard enough.
It sounds like you've already decided that you will never be a deist, and so you never will. How is that different from religious belief?