Answer:
If you are using a chocolate powder mix, you will want to start by heating up some water.
While the water is heating, retrieve your preferable mug and the powder mix.
After you have done so, poor the powder mix into the mug.
When the water has finished heating, slowely poor the water nearly to the edge of the mug, giving it at least half of an inche from the brim so that you can still walk with your mug without spilling it.
Stir well, and enjoy!