Don't lose your flavor!

So I was reading this great book called the Bible this morning. I was reading in Luke 14 where Jesus is talking about the cost of being a disciple. It spoke so much to me and just what I've been dealing with lately. Here is Luke 14:25-35:

A large crowd was following Jesus. He turned around and said to them, “If you want to be my disciple, you must hate everyone else by comparison—your father and mother, wife and children, brothers and sisters—yes, even your own life. Otherwise, you cannot be my disciple. And if you do not carry your own cross and follow me, you cannot be my disciple.
“But don’t begin until you count the cost. For who would begin construction of a building without first calculating the cost to see if there is enough money to finish it? Otherwise, you might complete only the foundation before running out of money, and then everyone would laugh at you. They would say, ‘There’s the person who started that building and couldn’t afford to finish it!’
“Or what king would go to war against another king without first sitting down with his counselors to discuss whether his army of 10,000 could defeat the 20,000 soldiers marching against him? And if he can’t, he will send a delegation to discuss terms of peace while the enemy is still far away. So you cannot become my disciple without giving up everything you own.
“Salt is good for seasoning. But if it loses its flavor, how do you make it salty again? Flavorless salt is good neither for the soil nor for the manure pile. It is thrown away."

The purpose of Full-time Elevate is to train you for full-time ministry and that is what I want to do. I have such a burden for the youth of this generation and to see them serve the Father. But looking back, I don't think I knew what I was getting into. I knew I was willing to do whatever it takes to serve the church and the Kingdom but I don't think I really knew what it actually takes.
I didn't realize how heavy the burden can feel sometimes.
Jesus tells us to not begin unitl you count the cost. God asked me to count the cost. Am I truly willing to give up everything, to lose it all, for the sake of being a part of his Kingdom. Am I really willing to give up everything that is mine, all of my rights, to become a servant for His Kingdom? God really questioned my heart this morning. I have to be willing to give up everything that is mine, go wherever he wants me to go, so that I can be used for His kingdom. My heart's number one desire is to serve Him and be used by Him but am I willing, are you willing to count the cost? To give it all up?
Jesus tells us that as Christians we are the salt of this earth, that we were created to be used by Him and for Him. But we aren't any good if we lose are usefullness. Jesus says in one of the last verses that flavorless salt is useless, that it gets thrown away. I prayed that I would never become useless in the Kingdom.
So how do you lose your usefulness?
I believe you lose your usefulness when you lose your willingness.
I know how to lose my usefulness, but how can I prevent from losing my usefulness?
I think I need to keep my heart constantly in check. Keep checking my motives. Keep checking my willingness. Keep asking myself the hard questions? Am I still willing to lose it all? Is he still worthy when things in my life aren't going right? Am I still willing to count the cost? Am I still willing to do whatever it takes to not lose my flavor?