I attended the Inner Engineering session in Aug-17 which means 6 months back & I should confess that it has been the bestest experience of my life time. 

The learnings revolve around 2 central aspects as I understand and remember. 
  1. Shambhavi Mahamudra is the tool, if done for 3 months – proved scientifically, improves neural regeneration by 240% and the fact that,
  2. One has unlimited response-ability (action being secondary thing). 

I haven’t been able to continue the practice very consistently however I have been benefited in ways beyond my imagination. One of the key things that Sadhguru says is – ‘Do you want Solace or you want Solution’.

The below is my mind map of the various learnings that were key to me.

Sadhguru Jaggi's Teachings
Mind Map – Sadhguru’s Teachings