The best feature of a product should really be the customer service.
The design is done when the problem goes away.
Unless you are a fortune-teller, long-term business planning is a fantasy.
No is easier to do. Yes is easier to say.
Before you dismiss a beginner's work, remember how much you sucked when you started. You probably sucked worse, actually.
"Easy" is a word that's used to describe other people's jobs.