In the daily battles of life one can be tempted to give in to depression or fatigue as we see sin and compromise increasing. Yet there is hope. God is sovereign. Nothing is inevitable except what God has decreed. And there is power in prayer.
Christians are not doomed to defeat but called to victory. If God can change us then He can use us to change some part of this world. Christians can change the course of human history by prayer and obedience to God. The Bible is full of examples of believers "who through faith conquered kingdoms." Hebrews 11:33. And recent history confirms the power of prayer.