The greatest people of faith mentioned in the Bible experienced doubt in their walks with God so we are in very good company when our faith waivers! When Christ himself called Peter out of the boat to walk on the water, Peter doubted and began to sink. The great thing about Peter in that situation was that he turned to Christ for help and we can do the same. When we doubt, we need to press into God, remember His promises and ask Him to strengthen us. God knows we will waver and He will be there to strengthen us when we call upon Him.