It's always too early to quit.
Well done is better than well said.
What you do today can improve all your tomorrows.
If you're going through hell, keep going.
Never complain and never explain.
Always desire to learn something useful.
Quality is not an act, it is a habit.
Without hard work, nothing grows but weeds.
If you can dream it, you can do it.
Problems are not stop signs, they are guidelines.
There's always a learning curve, where you've got to learn what your subject is all about.