Previous pinner--This is how it works. You think you can handle it. But then, the burden gets too heavy to bear. So you just collapse under the pressure. And people wonder what happened to you "all of a sudden".
Artist Kyson Dana challenged a friend to do a sketch every day for 29 days, each time drawing an animal that started with the letter of the day. (So His first sketch was an armadillo.) See the whole sketchbook on Behance.