How do you know if you should keep going at something? How do you know when it's time to call it quits?
How can you tell if you are called by God to exercise a particular ministry? Will you know because people tell you they find it helpful? Is it possible that you should keep doing it even if nobody comments?
If people do say they appreciate what you are doing, how do you know that you should keep doing it?
How do you know if you're on the right track? How do you know when it's time to hang up your boots?