How do you change from wolf to human

If you are talking about The LoZ: Twilight Princess, then in order to turn back into a human, you have too get to a certain point in the game. If your Talking about when you first turn into a wolf, then you have to save the spirit in your town. Its in the little pond thingy. Then it asks you to go kill these little bugs, that are holding its light. The spirit gives you the Vessal of light to gather up the pieces of light. Now if your talking about when you can transform to wolf and back at will, then you must beat the water temple first. You are a human when you beat it, and when you complete the the temple and exit, Zant confronts you, and he puts the shard of darkness in your head and you immediatly turn into a wolf. The he turns minda into a creature of light. The spirit of the lake then decides to help you. It teleports you into Hyrule Field telling you to go to the castle. Then you take minda there and the princess saves her, by sacrificing herself. But you are still are a wolf. Then you have to go into the Scarced Grove and its where the first temple is. Then you go deeper and deeper into the forest. The skull kid cronfronts you. and you play a little game of tag with her. Then you go deeper till you get into an open area. There is a Triforce on the ground, and there are 2 guardian statues in front of it. You stand on it, and howl the song of time. Then the ground messes up, and it splits up into indivdual pillars. the gaurdians are in different places and then they ask you to lead them to where they where. GOOD LUCK WITH THAT! it was mega hard. then after you finish that nonsense they open up a door for you. when you enter to see the Master Sword. You go to it and grab it, then a cutsecne comes up. The power of the master sword knockes the evil shard out of your head! Yay now you can transform at will.