There is one thing you can easily do that really motivates.
And that is making your people feel appreciated.
People who feel appreciated will look beyond their job description and go the extra mile. They will seek success for you, and them, on your joint endeavour.
So do something amazing today.
Catch someone doing something right, and tell them how good they are with as much energy and sincerity as if you had caught them doing something wrong.
Here are some more ideas on motivational feedback.
My best wishes, Paul