In yesterday's London Times, there is an article about Paul Mealor who wrote music for the 9/11 ceremonies in New York and the british royal wedding in April (paid for content, here: http://www.thetimes.co.uk/tto/arts/music/classical/article3219098.ece). In it, he says that he received 17,000 thank you letters and he replied to them all. No, that's not a typo. Seventeen thousand.
It made me think about two things. One, anyone who feels they don't have time to write at least one thank you note a week has a new goal. If Paul Mealor can write 17,000, you can write one. If you can't find one person a week, you're not looking hard enough. Even your doctor's receptionist who is always cheery and helpful, will appreciate a thank you note saying so.
Two, the unofficial US Army Corps of Engineer's motto: "The difficult we do at once. The impossible takes a little longer", should belong to us all. If someone asked me to write 17,000 thank you notes in a month, or even over several months, I'd say it was impossible. Quite clearly, it's not. So what's on your 'can't do, impossible' list, and how could you get it done?