It's always too early to quit.
The wise does at once what the fool does at last.
Well done is better than well said.
Wherever you are - be all there.
If you've got a talent, protect it.
Know or listen to those who know.
By failing to prepare, you are preparing to fail.
The secret of getting ahead is getting started.
Be gentle to all and stern with yourself.
The dog that trots about finds a bone.
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 My dad is a civil engineer in Switzerland he's 90 years old now, so he's no longer active as a civil engineer, but still a very active person.