Romans 12:12 Be joyful in hope, patient in affliction, faithful in prayer.
We can be so joyful in the hope that God gives us that we may find that when we lose sight of that hope we feel even worse that before we knew that hope.
This is because the hope that we have in God is more precious than anything else we had before we knew Him. So when we do face tough times we have to be patient to wait for God to show us the way forward.
Lifting up our prayers at all times will allow us to be aware of what God has in store for us, feeding our hope and filling us with joy again.