Service is the rent we pay for living. It is the very purpose of life and not something you do in your spare time.
Christ was very clear in His expectations that we are to serve others. How will you serve Him today?
And the king will say to them in reply, ‘Amen, I say to you, whatever you did for one of these least brothers of mine, you did for me.’
Matthew 25:40 (NABRE)