I wrote this short piece many years ago. While there is a depth to yoga disciplines that go far beyond what Crowley discussed, I do still agree that his simplified adaptation of the 8 Limbs is a good basic primer on practical yoga exercises to achieve a well rounded practice in ones daily work.
Many western practitioners neglect the most fundamental aspects of meditation and calming the body, much to their disadvantage. The need to be able to concentrate, visualize, calm the body, increase energy, and so on, are essential techniques in western ritual that are used for every practice. Crowley’s introduction to the Yoga Sutras at the very least gives the westerner a simple way to get started and begin seeing benefits of practice almost immediately.
While Eight Lectures on Yoga is in no way a substitute for in depth training and practice for those that would go deep into the path of yoga, it is without a doubt good basic instruction in the fundamentals of practice that anyone can begin with. If limited only to his instruction, one would certainly see plenty of benefits in all aspects of their daily life.