Expect problems and eat them for breakfast.
After a storm comes a calm.
If you think you can do it, you can.
Without hard work, nothing grows but weeds.
Either you run the day or the day runs you.
Be thine own palace, or the world's thy jail.
The secret of getting ahead is getting started.
Well done is better than well said.
Never complain and never explain.
Things do not happen. Things are made to happen.
That is a secondary teacher conception - the writer as an observer.