This is just a simple generic candle spell that you can adapt to most anything you need. If you use it, please use it wisely. Don't use it to interfere with anyone else's life.
Find a spot where you will not be disturbed for awhile, and will have reasonable quiet. Use a flat level service, such as an altar. If you don't have an altar, you can use a coffee table or dresser. You can perform this spell during the day, or at night. If you do it at night, you can turn the lights off, but if it makes you uncomfortable, leave them on.
You will need a candle, oil for anointing the candle, one or more herbs corresponding to the spell. You will also need your athame, or straight pin if you don't have an athame. You can also use stones if you want. Check herb and color correspondences for the appropriate color, herb and oils. The shape of the candle does not really matter. Taper or Votive candles will work. If you can't find the color you need, use plain white.
Carve what you wish to accomplish into the candle with the athame or pin. If you are using a taper, carve the words from top to bottom, for increasing and bottom to top for decreasing. If you are using a votive candle, carve it around the candle clockwise for increasing, counterclockwise for decreasing.
Anoint the candle with the oil. A drop is enough. Rub from wick to end for increasing and end to wick for decreasing.
Put the candle in the holder. Sprinkle the herbs in a circle around the base of the candle, a pinch is more than enough. If you are using stones, set them in a circle around the candle holder. If you are using just one stone, set it beside the holder in the direction that corresponds to the purpose of your spell. For example, if you were doing a spell to increase your physical energy, you might set the stone in the south.
Light the candle. As you light the candle, visualize what you want to accomplish. To do this, think of what you need and hold a picture of it in your mind. You can also use a chant at this point or just say what you want to happen out loud. This is optional, in my opinion, visualization is the most effective.
Let the candle burn out completely if possible. DO Not leave it unattended.If you have to leave or go to sleep, put the candle out and relight it as soon as you can. No matter how safe you think your candle holders are, accidents can happen. I have had wax catch fire and cause a glass candleholder to split. If I hadn't been watching it, my altar would have caught fire. ALWAYS monitor your candles, and use fireproof holders.
When the candle has burned out, dispose of the wax and herbs. Bury it if possible.