Celebrate your successes. Find some humor in your failures. Don't take yourself so seriously. Loosen up, and everyone around you will loosen up. Have fun. Show enthusiasm. Always.
If you love your work, you'll be out there every day trying to do it the best you possibly can, and pretty soon everybody around will catch the passion from you — like a fever.
Communicate everything you possibly can to your partners. The more they know, the more they'll understand. The more they understand, the more they'll care. Once they care, there's no stopping them.