There is a lot to be said for actually pausing and acknowledging new and otherwise fleeting thoughts and observations you make every day. There's a wealth of literature à la Buddhist and Anthony Robbins-style that endorse the benefits of noting them down. A sense of perspective, happiness, positivity, personal growth and a better connection to and grounding of oneself to name a few...
Social media has certianly had a role in inadvertently encouraging us to do so when we're not just posting of our whereabouts or meanderings.
Writer Giles Turnbull managed to do so for a whole year. Which should technically make him a very, very happy person (his last post is evidence of this, and particularly lovely).
Thanks for the link Russell Davies