No one is naturally bad at spirit because we are all, naturally, creatures of spirit. If we do the work to clear away the crap, our spirits shine. Despite this I know teachers who refuse spirit in their classes, their students and their practice because they feel they, themselves, don't have adequate talent for it: if spirit ever rises then their students outshine them. The reason for this, usually, is that they started teaching before being properly qualified, and ever since have been refusing correction.