There are always things we can complain about. But the more we speak in a negative way the more negative we and our listeners become. Even if everything isn't going our way, we can share with others at least one way that God has blessed us. If our speech is flavored with gratitude we will be more grateful. Let's focus on the goodness of God.
Scripture is a big help here.
We can steep ourselves in the accounts of God's deliverance and tender care for His people and perhaps even memorize a gem from Scripture that speaks of His love. Put up a new list every few days. This can help you to start looking for the blessings of God, and when you do, you will definitely find them. People who know they have received much are happy and free to share those blessings with others. See if you can give someone a hand.