You get 1 white, 1 blue, and 1yellow candle. Light them all in front of a mirror and say this chant:
that I say
Make me my right size
this very day
When you finish this chant, pour the wax from the candles into a small glass with a new wick in it. Repeat this day after day until your new candle is made. Burn your new candle until it or the wind puts the candle out. When you're feeling overweight again light the candle and let it put itself out.