Psalm 77:12 I will meditate also of all thy work, and talk of thy doings.
We need to stop and think about all that God is and has been doing. He has been so good to us. Count your many blessings and see what God has done. As the song says, you might be surprised.
Think about how He created the world. Think about how He died on a cross for you and then sought you out to save you. Think about how He has heard and answered your prayers. Think about all these things. Then tell people about your great God.
Be careful not to think that these things just happened. Be careful to consider that God is at work in your life. We often think we deserve it or it is only a coincidence. We think, well, it was going to happen anyway when it was God.
Think on Him. Think about what He is doing. Get ready to give Him glory for who He is and what He has been doing.