Know or listen to those who know.
Problems are not stop signs, they are guidelines.
If you think you can do it, you can.
If you're going through hell, keep going.
The wise does at once what the fool does at last.
Either you run the day or the day runs you.
If you've got a talent, protect it.
Without hard work, nothing grows but weeds.
After a storm comes a calm.
It's always too early to quit.
That's something I learned in art school. I studied graphic design in Germany, and my professor emphasized the responsibility that designers and illustrators have towards the people they create things for.