The two most powerful words in any language are 'thank you', according to Amy Rees Anderson, a seriously successful entrepreneur (details of her achievements suggesting this advice is worth taking are here: amyreesanderson.com).
"I once read a quote by the ever so brilliant writer known as Anonymous," she writes. "It states, 'People will forget what you said. People will forget what you did. But people will never forget how you made them feel.'
"The most powerful tool you have in creating success in your life is to appreciate other people. When you appreciate others you will find that...your career and business will succeed beyond your expectations..."
Several year ago at an ambitious small PR company, we made a point in December of formally thanking our clients with a modest gift. This job usually fell to me and, because we were quite busy, usually a bit too late. Several times, next day couriers cost more than the gifts themselves.
If Perfect Night In had been around back then, it would have been the perfect choice. Deliver to work or home address? Yes. Assured delivery date? Yes. Thank you card included? Yes. Too lavish? No. Too much work? Certainly not.
The last word should go to the formidable Ms Anderson: "If you pay attention for even one day to everyone who could possibly deserve to hear a 'thank you' you will be amazed at the number of opportunities that could be missed in a day if we don’t pay attention. There is never a downside to saying thank you. It can only make your own life and the lives of those around you better."
Season's greetings and best wishes for a successful 2017.
Phil the marketing elf
 Source: http://www.amyreesanderson.com/blog/2013/06/#.WEqm132_tTl viewed Fri 9 Dec 2016. People do business with people they like (Forbes article).