Isaiah 46:9, 10 (NKJV)
God is a faith God, He is not a God who is focused on what can be seen but He looks to what is not yet seen. Isaiah 46 tells us that God declares the end from the beginning. This is similar to what we see in Romans 4:17 where it tells us that God calls the things that are not as though they were. God does not just talk about how things look and the way things are now, from the beginning God talks about how things should look and how things will be in the end. This is a principle we see all throughout the Bible.
In the Garden of Eden after man had sinned God promised that there would be a Redeemer. We see this principle in the prophecies of the Old Testament proclaiming the coming Savior, Jesus. We can see God talk like this to people too. In Judges 6 an angel appeared to Gideon who was hiding from the enemy and the angel from God declared that this was a might man of valor. In Genesis 17:5 God renamed Abram to Abraham, which means the father of a multitude, saying "I have made you a father of many nations". It hadn't happened yet but God talked as if it had.
Some people would look at all of this and say that it is fine for God to do this, He is God. But, the Bible tells us that we need to imitate God (Ephesians 5:1), and that we need to have the God kind of faith (Mark 11:22). We need to imitate God and use our words the same way that He does. From the first moment we find ourselves in the middle of a difficulty or a problem we should begin to say what the Bible says about the situation. Don't just talk about how things look, how you feel, or what past experience you have had, from the beginning make a declaration based on God's Word of what the outcome will be! That is how God talks and that is how we should talk.