Flow is defined as the state in which people are so involved in an activity that nothing else seems to matter; the experience itself is so enjoyable that people will do it even at great cost, for the sheer sake of doing it.
Flow is one of the key concepts in positive psychology. Developed by Mihaly Csikszentmihalyi and his colleagues starting in 1980s, a lot of research has been done to explore how flow happens in various domains such as sports, education, work and leisure.
Mihaly Csikszentmihalyi wrote a book, titled “Flow: The Psychology of Optimal Experience”, in which he has presented this research in a language that can be understood by laymen like us. Though the book has only around 300 pages, it takes a good amount of time to read and absorb the concepts discussed in this book. In case, you need a gist of it then you can watch his 19-minute TED talk recorded in year 2004.
The link to this learning resource is http://bit.ly/vnl0012.