Problems are not stop signs, they are guidelines.
Never complain and never explain.
Without hard work, nothing grows but weeds.
What you do today can improve all your tomorrows.
It's always too early to quit.
The secret of getting ahead is getting started.
Well done is better than well said.
If you're going through hell, keep going.
I can, therefore I am.
By failing to prepare, you are preparing to fail.
Bad things do happen in the world, like war, natural disasters, disease. But out of those situations always arise stories of ordinary people doing extraordinary things.