Be kind whenever possible. It is always possible.
Wherever you are - be all there.
Problems are not stop signs, they are guidelines.
The wise does at once what the fool does at last.
After a storm comes a calm.
Things do not happen. Things are made to happen.
Do not weep do not wax indignant. Understand.
What you do today can improve all your tomorrows.
To be a good loser is to learn how to win.
To know oneself, one should assert oneself.
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.