Faith is the substance of hope - of things hoped for and the evidence of things not seen. So if you can hope for it and imagine it and keep imagining and hoping and seeing yourself driving a new car or seeing yourself getting that job or seeing yourself excel seeing yourself help that person - that is faith.
Religious wars are not caused by the fact that there is more than one religion but by the spirit of intolerance... the spread of which can only be regarded as the total eclipse of human reason.