Lie down in the form of a star, opening the arms and legs to the left and right.
Concentrate now on your own immediate physical needs.
Meditate, reflect on each one of those needs.
Fall asleep trying to discover by yourself where the need ends and where greed begins.
If your practice of concentration and inner meditation is correct, with inner vision you will discover which are your legitimate needs and which are greed.
Remember that only by deeply comprehending need and greed can you establish a true foundation for the correct process of thinking.
Samael Aun Weor
Introduction to Gnosis, chapter 5