If you are a leader in your org then you are shaping its culture; whether you intend to or not; want to or not. The best leaders shape their culture intentionally - not accidentally.
Here are 3 things I've recently realized:
1. Authenticity and vulnerability with those you lead will increase their trust in you and willingness to mimic that behavior with each other.
2. Do not create insiders and outsiders with your staff. Everyone you lead should feel like they are on the inside of your department's purpose - a key stakeholder - a partner not employee.
3. Be the #1 encourager - the #1 cheerleader - the most optimistic - and a far better coach than critic. Your staff beat themselves up enough. They need you to build them up, even when you are disciplining or course correcting.