From the book by Yehuda Berg, The Power of Kabbalah:
“Once upon a time there was a kind elderly puzzle maker who possessed magical power. His greatest joy was to create beautiful picture puzzles for the children in the neighborhood. These were not ordinary puzzles. They were magical—when the very last piece fell into place, light would begin to radiate from the image, filling the children with joy. They only had to look at the picture. Nothing more. For the children, this was better than eating ten thousand chocolate biscuits and drinking ten thousand glasses of milk.
One day the puzzle maker truly surpassed himself. He painted his most beautiful picture, with magical paints made of stardust and special brushes with gold-plated handles. The master was so excited about his creation that he decided not to cut the picture into pieces as a puzzle, so that the children could immediately experience the whole magic.
Just as he had finished wrapping the picture, a little boy entered the shop, hoping to find the master’s newest creation. The puzzle maker excitedly handed him the package. The boy’s eyes, glowing with a smile, suddenly grew dim. His face became sad. ‘What is it?’ asked the master. The child explained that assembling the puzzle was actually the most enjoyable part of all. The puzzle maker understood immediately. And with the same love and care with which he had painted the picture, he cut it up and took it apart. He scattered the pieces with love into the box and gave the children what they truly wanted most of all—the pleasure and fulfillment of assembling the magical puzzle themselves.
In order to give the Vessel the opportunity to create its own fulfillment, the World of Infinity was taken apart and turned into a picture puzzle. By giving the Vessel the opportunity to reassemble the picture of Creation, we—the Vessel—become creators of our own fulfillment and the cause of our own joy. Thus our deepest desire and our most fundamental need are fulfilled.”**
We become the cause of how we feel by using the “formula of transformation.”
Note: The quoted passages are translated from Bulgarian.



