I first found the "Change Your Words" graphic at a blog post by Jackie Gerstein: The Educator with a Growth Mindset: A Staff Workshop (see that graphic below). I've also seen this version of the sayings making the rounds:
Growth Mindset and SBG Bulletin Board Downloads
from Math = Love
(visit the blog post for full-sized version)
What am I missing?
This may take some time and effort.
I'm on the right track.
I'll use some of the strategies I've learned.
Is this really my best work?
I'm going to figure out what she does and try it.
Mistakes help me improve.
I'm going to train my brain in math.
I can always improve; I'll keep trying.