It's always too early to quit.
Quality is not an act, it is a habit.
Who seeks shall find.
After a storm comes a calm.
Expect problems and eat them for breakfast.
To know oneself, one should assert oneself.
If you've got a talent, protect it.
By failing to prepare, you are preparing to fail.
The most effective way to do it, is to do it.
If you can dream it, you can do it.
That's the biggest part of doing comics: You have to create stuff that makes you want to get out of bed every morning and get to work.