It's always too early to quit.
After a storm comes a calm.
Wherever you are - be all there.
If you've got a talent, protect it.
Well done is better than well said.
Expect problems and eat them for breakfast.
If you think you can do it, you can.
The dog that trots about finds a bone.
The most effective way to do it, is to do it.
Be kind whenever possible. It is always possible.
Besides the actual reading in class of many poems, I would suggest you do two things: first, while teaching everything you can and keeping free of it, teach that poetry is a mode of discourse that differs from logical exposition.