Don't motivate your team to chase accomplishments. Dare them to chase some great big purpose.
I've found that when you motivate people to chase an accomplishment only (a sales goal, a market share percentage, a profit margin), they may hit it, but you're left with not much more than a milestone for a memory.
But, when you help others chase a great big purpose - in their life and in the life of your organization - you'll end up with a truckload of accomplishments as well.