Marshall Goldsmith is one of the world's leading experts on executive coaching. Here's a very simple but effective process he suggests that will help you shift the performance of your team:

1. Ask everyone where they feel the team is on a scale of 1 to 10.

2. Now decide where you want the team to be on a scale of 1 to 10.

3. Have each team member write down two behaviors that, if they changed, would close the gap between where your team is and where you want it to be. (The behaviors might be more recognition, better listening skills, clearer direction, more constructive feedback etc.)  

4. Practice feed forward to help everyone change their behaviors and get your team to where you want it to be. Goldsmith defines feed forward as being: Positive, simple, fast, and future oriented.