The most effective way to do it, is to do it.
By failing to prepare, you are preparing to fail.
Who seeks shall find.
You never know what motivates you.
Well done is better than well said.
After a storm comes a calm.
I can, therefore I am.
If you've got a talent, protect it.
Problems are not stop signs, they are guidelines.
Be thine own palace, or the world's thy jail.
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.