Be gentle to all and stern with yourself.
Be thine own palace, or the world's thy jail.
What you do today can improve all your tomorrows.
Well done is better than well said.
It's always too early to quit.
If you can dream it, you can do it.
Who seeks shall find.
Be kind whenever possible. It is always possible.
The most effective way to do it, is to do it.
Either you run the day or the day runs you.
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 My dad is a civil engineer in Switzerland he's 90 years old now, so he's no longer active as a civil engineer, but still a very active person.