Servants think of ministry as an opportunity, not an obligation.
When a service need arises around you, never think, I "have to" get involved. You don't have to do anything for God. However, if God is in you, you want to find ways to help. Think about God when you have a chance to serve.
Whoever serves me must follow me; and where I am, my servant also will be. My Father will honor the one who serves me.