Be thine own palace, or the world's thy jail.
Things do not happen. Things are made to happen.
If you're going through hell, keep going.
The secret of getting ahead is getting started.
Know or listen to those who know.
It's always too early to quit.
The dog that trots about finds a bone.
Be kind whenever possible. It is always possible.
To know oneself, one should assert oneself.
Expect problems and eat them for breakfast.
There's obviously nothing wrong with selling your art - only an idiot with a trust fund would tell you otherwise. But it's confusing to know how far you should take it.