Does anyone have links to good fear “science” information? I’m interested in learning how to discern anxiety (pointless worry) from acute dear (fear with a poi

Does anyone have links to good fear “science” information? I’m interested in learning how to discern anxiety (pointless worry) from acute dear (fear with a point). And further, to figure out how to manage acute fear. The particular use case is to be able to large and larger jumps and drops on a mountain bike.