Oh, how the world needs to see a glimpse of the glory of God! But that will happen only when Christians learn to let God be God. God's glory shares space with no other thing. Therefore, when we allow God to fill us with Who He is, we will reveal His glory.
Since Christ's death and resurrection, and now that He is seated at the right hand of God in heaven, we are God's habitation on earth. We are the place where God's glory can rest.
All of us have a history of particular problems. Yet, the answer for every person is to be filled with the glory of God. Victory comes when the nature of God fills us. That is the full counsel of God for the meaning of Galatians 2:20, "It is no longer I, but Christ who lives in me."
Suppose that you have trouble loving a certain individual. You may have tried to overcome something that happened years before, and you just cannot let go of it mentally. But now, God does it in you and for you! As 1 Thessalonians 5:24 tells us: "Faithful is he that calleth you, who also will do it." Also, in Job 23:14, "He performeth the thing that is appointed for me."
Now you can understand why Job esteemed God's words as better and more necessary than his daily food (Job 23:12). God's words are Spirit and life (John 6:63).