Halloween is an ideal time to magically do away with weakness. The Celts for example, on Samhain slaughtered all livestock that were too weak to live through the comming winter.
Using a quill pen and dragon's blood ink (red ink will do), write upon peice of parchment the weaknesses you wish to be rid of. As you concentrate on your intent crumple up the paper in your "power hand" (whichever hand you are most proficient in) and toss it into a fire, or set it ablaze by holding it above the flame of a black candle. Place it into a censor, cauldren or other fire proff container and as the parhcment burns away into ashes, so too shall all your weakness by consumed by the flames.