How to integrate insights?

[Harikrishnan]

So i did a vipassana retreat last month and after taking modafinil on 5th day and  having a good meditation session i had a insight like whatever i do i cannot tell how good meditation was to my friends and make them realize. Because they only realize to the extent where i believe they realized it. It made me go deep and realize they where all projections of  my mind and am only one aware. (Its confusing to tell this way, let me try it again) if i and marie are friends and marie cannot have another friend without i knowing it, and if i die marie dies with me. I earlier thought  everyone have there own world or reality, but this made me think otherwise.  So if this is a good insight how do i integrate this to my life? Does a good insight changes ur life automatically or u have to work with for so many years and integrate it with life?