Living by faith is not the domain of only those Christians called to "full-time" ministry. Every Christian can enter into the adventure. What is important is not our vocation, but whether we are committed to obeying God's will in our lives. If you are willing to step out in faith and trust in God, doing whatever it is He has asked you to do, then you will see His provision. Once you have experienced this, you will be spoiled for the ordinary.