Write a poem about discipline. Your poem can be a haiku, or a clerihew, or some other simple form. Or, it can be as long as you like.
Write several, if needed, to create one you consider worthy of framing. With a thick margin, write it nicely or print it on a piece of paper. Make it frame-worthy by antiquing the paper with coffee or tea, burning the edges, rub dirt on it, whatever makes it cool to your sense of style.
Your poem can answer questions like:
Here's an example clerihew:
Self-Discipline
Has the first impression of a chagrin.
But after discipline is your well-acquainted chum,
It is a friend that brings you many types of freedom.
Here's a finished product: