" God performed miracle after miracle for the Israelites. He supernaturally brought them out of slavery. He sent all these plagues on their enemies. Even though the Israelites were living next door, the plagues did not affect them. When they came to a dead end at the Red Sea, with Pharaoh and his army chasing them, it might have looked like their lives were all over, but the water parted.
They went through the sea on dry ground. God gave them water out of a rock, and He led them by the cloud by day and the pillar of fire by night. But in spite of all of this they never made it into the Promised Land. Psalm 78 tells why. It says, “They forgot what God had done, they didn’t remember the amazing miracles He had shown them and their ancestors.”
When you forget what you should be remembering, it can keep you out of your Promised Land. The Israelites became discouraged, started complaining, and asked Moses, “Why did you bring us out here to die in the desert?”
When they faced an enemy, they thought, “We don’t have a chance.” They already had seen God’s goodness in amazing ways. They had seen God do the impossible, but because they forgot about it, they were afraid, worried, and negative. It kept them from their destiny. "

― Joel Osteen , You Can You Will: 8 Undeniable Qualities of a Winner