I pray also that the eyes of your heart may be enlightened in order that you may know the hope to which he has called you, the riches of his glorious inheritance in the saints. Ephesians 1:18
Heaven is something we see with our heart. When we are discouraged, doubtful, and depressed, we need to have the eyes of our hearts "enlightened." The dawn needs to rise in our darkness and we see the dawn of hope and the riches of our inheritance. But when things look bad, sometimes the only way to remember these things is to sing them, pray them, and read God's promises of them.
We sometimes struggle in our confidence that God will act in response to our prayers and do what we have trusted Him to do in our lives. We pray, fill us with your Spirit and comfort our doubts and kindle our passion that we may serve you with boldness and share your grace with others. God is our hope.