Designers have a responsibility to show the future as they want it to be - or at least as it can be, not just the way an industry wants it to be.
Advertising is the price companies pay for being unoriginal.
To the optimist, the glass is half full. To the pessimist, the glass is half empty. To the engineer, the glass is twice as big as it needs to be. Design is how you treat your customers. If you treat them well from an environmental, emotional, and aesthetic standpoint, you're probably doing good design.
You can't do good work on a short-term contract. You need to be engaged over a period of time.
Sometimes you can find peace of mind by transferring yourself to different situations. They're just reminders to stay... calm.