Faith, not fantasy?

I'm not sure how to take the author's quotes below in comparison/contrast to the Matthew verse of Peter walking on the water.  If faith means I can do something that only my emotions could tell me to even try (like walking on water) then that seems more like fantasy (realm of emotion) vs reality (realm of the will)...

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Matthew 14:22-33 28 “Lord, if it’s you,” Peter replied, “tell me to come to you on the water.”

29 “Come,” he said. Then Peter got down out of the boat, walked on the water and came toward Jesus. 30 But when he saw the wind, he was afraid and, beginning to sink, cried out, “Lord, save me!”

31 Immediately Jesus reached out his hand and caught him.“You of little faith,” he said, “why did you doubt?”

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"Faith is not an emotional state. It's a volitional response. You choose to believe, you choose to obey. Too many in this generation make their emotions their Lord. Always being driven by their emotions, always making choices by how they feel and not based upon what God says. You wanna grow in maturity, you wanna grow as a worshipper of God? Learn how to give Christ His Lordship in your decisions, not based upon how you feel but based on what the Word of God says." - Jason Cunningham

"the life of faith is lived in the realm of the will, not in the realm of the emotion" - Jason Cunningham