Here's a TED talk by Sinek on the concept (it turned into a book, Start With Why, and now a set of courses, etc.)
It's a simple but powerful concept - one of those you should revisit on a regular basis to test your beliefs and the difference you want to make at work, in your society, etc.
It's a simple but powerful concept - one of those you should revisit on a regular basis to test your beliefs and the difference you want to make at work, in your society, etc.
https://www.youtube.com/watch?v=u4ZoJKF_VuA&vl=en