Learning Something in 20 Days

Josh Kaufman explains in his TEDTalk that any skill can be learned in 20 days...given about an hour a day. The way he describes the process is that yes, there is a piece of research that says it takes 10,000 hours to learn a skill but that is to become an expert. Dr. K. Anders Ericsson, originator of the 10,000 concept, studied what it takes to get to the top of competitive fields like music, chess, athletics. The very top competitors put in about 10,000 hours. Malcom Gladwell wrote a book that included the Erisson information. Then over time the information watered down from 10,000 to become an expert in an narrowly measured  ultra competitive field to 10,000 to become good at something. VERY different meanings indeed! 

However, for casual learning for self-knowledge without the competition, how long does it take to get to a place of ok-ness? Mr. Kaufman says 20 hours and proves it by playing his ukelele at the end of his TEDTalk!  "Twenty hours of focused, deliberate practice..."