When you work for the Lord, you must seek to increase your value! You must understand what makes you valuable and do those things. You must understand what valuable thing God has placed in you and develop it. Your value increases when you can be sent.
Not everyone is sendable. A person being sent on a mission must have the special ability to be faithful without varying the message. Most people who are sent on a mission become sympathetic to the people they are sent to and modify their mission and their message! Thank God for those who can stay with the message no matter how hard or ridiculous it sounds.