I’ve had this poster up on my wall (and engraved in my mind) for years. (Click here for a pdf.) It has inspired me and guided my teaching.
The words are from an article called “A brief summary of the best practices in teaching intended to challenge the professional development of all teachers,” by T. Drummond. The design is mine.
Working in Adult Literacy 
I’m going to assume you mean this is on your office wall not your classroom wall. Talk about intimidating! I’ve read it a number of times now and still have to work my way through it to get the meaning! What do you like about it?
Sorry to be so cryptic. Here’s a whole blog post to say what I like about this poster! The Poster Explained