Jesus makes a declaration about his followers. He says that our purpose is to be salt. Here is what Albert Barnes says about it:
Salt renders food pleasant and palatable, and preserves from putrefaction. So Christians, by their lives and instructions, are to keep the world from entire moral corruption.It causes me to remember that we are salt shakers in the Lord's service. In a sense the Holy Spirit turn us upside down, shakes us and releases salt into the lives of those around us.
When I think about this idea the word encouragement comes to me. I think that the Holy Spirit will often use us (as in 1Corinthians 14:3) to bring comfort, strength and encouragement to others. This kind of salt will help people to make it another day. This salt is totally relational in nature - it can only be spread in a relational context.
Turn me upside down Lord and shake the salt out of me.