It's always too early to quit.
To be a good loser is to learn how to win.
Quality is not an act, it is a habit.
Be gentle to all and stern with yourself.
Either you run the day or the day runs you.
Never complain and never explain.
You never know what motivates you.
Who seeks shall find.
Expect problems and eat them for breakfast.
If you're going through hell, keep going.
I would say the most help I got was from my dad. My dad is a civil engineer in Switzerland he's 90 years old now, so he's no longer active as a civil engineer, but still a very active person.