Quality is not an act, it is a habit.
Either you run the day or the day runs you.
Always desire to learn something useful.
Be kind whenever possible. It is always possible.
The secret of getting ahead is getting started.
After a storm comes a calm.
Things do not happen. Things are made to happen.
Do not weep do not wax indignant. Understand.
Know or listen to those who know.
Begin to be now what you will be hereafter.
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.