What is the difference between ministry, service, and mission?

In summary, ministry primarily focuses on serving and supporting fellow believers, service encompasses acts of kindness and assistance to both believers and non-believers, and mission (outreach/evangelism) specifically targets reaching out to non-believers with the purpose of sharing the Gospel and leading them to faith in Christ.

"Jesus taught that spiritual maturity is never an end in itself. Maturity is for ministry! We grow up in order to give out. It is not enough to keep learning more and more. We must act on what we know and practice what we claim to believe... 

If you aren't serving, you're just existing, because life is meant for ministry. God wants you to learn to  love and serve others unselfishly. 

God wants to use you to make a difference in His world. He wants to work through you. What matters is not the duration of your life, but the donation of it. Not how long you lived, but how you lived." 

- Excerpt from: Warren, Rick. The Purpose Driven Life