How to be in "Flow" - Secret of highest productivity

Have you ever been in a state of engaging in an activity, totally engrossed, performing your best without the sense of time and everything else around you ? You may call this as being in groove or whatever. Have you wondered what factors put you right into this groove ? Can you put yourself into groove at your will ?

The Secret Of Nurturing Beautiful Relationships By Sadhguru

I read this article from Sadhguru Jaggi Vasudev, very interesting one.