When is the last time you expressed sincere gratitude to each client? To your boss? To your employees? To your co-workers? To everybody who makes what you do possible?
Tomorrow is Thanksgiving; consider who deserves or would appreciate your gratitude. And then give it out liberally. Send cards, hand-write notes, pick up a little something special for someone you know would appreciate it, or just look someone in the eye and say "Thank you for all you've done for me."
Those are some of the most powerful words in the world. For both the receiver and the speaker.