Somewhere along the way in Western Church history, Christians went from being a passionate people who expressed their fluctuating emotions to God, to a pious people who kept their emotions in check and handled their problems on their own.
God can use our discouragement to do a Divine work in us
The truth is Christians who love God will have moments of discouragement and doubt and will question God about why certain things are happening to them. Just take a look at Jesus Christ, the Son of God. When Jesus was dying on the cross, He cried out, My God, My God, why have You forsaken me? (Matthew 27:45). Was Jesus discouraged? Yes. His death was agonizingly slow and painful. Did Father God actually forsake Him? No. But the Father knew that He could not intervene in the Divine and supernatural process that reconciled sinful humanity back to Himself.