You can't motivate a group of people or a Team. You have to motivate people individually, and that motivation has to be in an environment in which that person has a goal - something they want to accomplish in their lives.
It's always better to speak the language of the team. Not only for the direct contact with everyone - sometimes it also helps you to understand the mentality of the people in the team a bit better.
On your eyelids crown the god of sleep,
Charming your blood with pleasing heaviness,
Making such difference 'twixt wake and sleep
As is the difference betwixt day and night
The hour before the heavenly-harness'd team
Begins his golden progress in the east.