2/4. Three weeks into the experiment to raise happiness levels in the town and Richard Reeves takes his "smile campaign" to the supermarket aisles.
Meanwhile, social entrepreneur Andrew Mawson is working on an ambitious beach party event, psychotherapist Brett Kahr builds the confidence of the Slough singers, and work specialists Jessica Pryce-Jones and Philippa Chapman present their employee happiness audit to the boss of an engineering firm.
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INTERACTIVE: poet Ian McMillan takes digital viewers through their typical day - find out what makes you happy via the red button
RT DIRECT: save £2 on the book How to Be Happy: Making Slough Happy, paying only £12.99 (incl p&p). To order phone [number removed] (calls from landlines cost no more than 8p per minute), visit [web address removed] or send a cheque payable to RT Direct Book Offers, to: [address removed]