Never complain and never explain.
Problems are not stop signs, they are guidelines.
If you can dream it, you can do it.
Either you run the day or the day runs you.
It's always too early to quit.
By failing to prepare, you are preparing to fail.
Leap, and the net will appear.
Know or listen to those who know.
If you think you can do it, you can.
The wise does at once what the fool does at last.
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 My dad is a civil engineer in Switzerland he's 90 years old now, so he's no longer active as a civil engineer, but still a very active person.