No, i didn’t invented them… they already exist and they are wonderfull! I have them on my desk since a year now, so each day i have one card facing my workplace. I also use them as bookmark (which is quite effective since i am reading at least 4 books at the same time).
Each card is really nicely illustrated by the illustrators from Lila Rogers studio with on one side of the card a powerfull affirmation, following a little explanation at the back.
I wish i could have made them, they are such a great source of support and inspiration!