In order to understand what faith is, you and I have to actually use it. A person does not really have faith until that person lives it out, boots on the ground, real life, real dilemmas, real crises.
Hebrews: Definition of Faith
Have you ever felt a small curl of melancholy, or maybe a tendril of fear, or a root of bitterness, or a little flame of anger, asking “Why me?” What does it mean to persevere, to be patient in affliction, to have joy and contentment in every circumstance?