This 30-minute documentary from The Jubilee Centre for Characters and Virtues is well worth watching, and contains a great mix of real stories of gratitude interspersed with an academic reflection on them. The stories are from across Britain and they do make the observation that we Brits can be be a bit awkward about gratitude.
The habit of identifying 3 Good Things each day is a powerful habit from Positive Psychology and can be impactful. This post details a simple way to extend the habit into something that has much greater impact.