Sadhguru Jaggi Vasudev is a contemporary spiritual teacher who has gained a large following around the world for his teachings on inner transformation and self-realization. His teachings are rooted in the ancient yogic sciences and are presented in a modern and accessible way. Here are some of the key messages and principles of Sadhguru's teachings:

1. Inner Engineering: Sadhguru emphasizes the importance of inner transformation and self-discovery through the practice of Inner Engineering. This involves understanding and mastering one's own mind, body, and energy to live a more joyful and fulfilling life.

2. Oneness: Sadhguru teaches that everything in existence is interconnected and that we are all part of one universal consciousness. He encourages individuals to break down the barriers of separation and embrace the idea of oneness with all beings.

3. Inner Peace: Sadhguru believes that true peace can only be found within oneself, and not through external means. He teaches techniques and practices to help individuals find inner peace, regardless of their external circumstances.

4. Consciousness: According to Sadhguru, consciousness is the fundamental aspect of our existence. He encourages individuals to expand their consciousness and tap into their inner potential to create a more joyful and purposeful life.

5. Karma: Sadhguru teaches that every action we take has consequences, and it is important to be mindful of our actions and their impact on ourselves and others. He emphasizes the importance of taking responsibility for our own lives and creating positive karma.

6. Inner Joy: Sadhguru believes that true joy and happiness come from within and are not dependent on external factors. He teaches techniques to help individuals tap into their inner joy and live a more joyful and fulfilling life.

7. Inner Engineering for Success: Sadhguru's teachings go beyond spiritual growth and also focus on achieving success in the material world. He teaches individuals to align their inner energies and harness their full potential to achieve success in all aspects of life.

8. Compassion and Service: Sadhguru emphasizes the importance of compassion and service towards others. He believes that true fulfillment comes from serving others and making a positive impact on the world.

In conclusion, Sadhguru's teachings revolve around inner transformation, oneness, inner peace, consciousness, karma, inner joy, success, and compassion. His message is to help individuals realize their full potential and live a life of joy, purpose, and service to others.