Philippians 4:6-7New King James Version (NKJV)
6 Be anxious for nothing, but in everything by prayer and supplication, with thanksgiving, let your requests be made known to God; 7 and the peace of God, which surpasses all understanding, will guard your hearts and minds through Christ Jesus.
God will fight your battles for you. In fact He has already fought all your battles for you, through Jesus. Every situation and battle you ever face has been overcome because of what Jesus has done. We are not "trying" to win a victory, we are coming "from" a place on victory through Jesus and are simply enforcing that victory in our lives. But will we trust? We may believe, but will we trust enough to see it through?
Our main job is to be doing what the above scripture passage says to do, "be anxious for nothing". That can be difficult. And here is another scripture passage about what we should be doing when it seems like the sky is falling on our heads, and the earth is caving in beneath our feet.
1 Thessalonians 5:18New King James Version (NKJV)
18 in everything give thanks; for this is the will of God in Christ Jesus for you.
In the name of Jesus, I bless you with the life of God.