You have probably seen these before, but for me it was a true revelation. I got introduced to Sister Corita Kent's art rules by Aslinn Adams, a talented artist and author of Nature Trails 2014 (a natural sketchbook exchange worth visiting!). And I was smitten. Not all the rules apply to my personal situation, but there are a few I simply adore. My current favourite is Rule I - Find a place you trust and then try trusting it for a while. It fully embraces the purpose of my creative awakening this year as I tend to try one thing and switch to another very quickly without giving it any chance to soar into something great.
I copied all the rules on my sketchbook using my brand new calligraphy set as an easily accessible reminder, but all the rules can be found here.