A training aid for golfers includes and elongated board that serves as a base member and a dowel pin that is inserted in a preselected transversely disposed throughbore formed in the board. A mirror having a longitudinally extending marking stripe applied to it is fixedly secured to the flat top surface of the board. With the training aid positioned between the golfer and the ball, the golfer orients his or her feet relative to the board and dowel pin in a predetermined way, and aligns his or her shoulders, hands, and head with the marking stripe during the set-up. The position of the club may also be observed during a slow motion practice swing, but the mirror is not observed after the set-up if the ball is to be hit with a regular swing. With practice, the golfer acquires a muscle memory of a proper set-up, and a properly executed golf swing. Further structural details include mounting blocks for storing the dowel pin when not in use and a mirror protector that is releasably attachable to the base member in overlying relation to the mirror.