When we feel beaten down by the world, it is easy to last out in anger or spite. But when our response is hate, it eliminates God's love from shining and bringing hope to your life, which can greatly affect your attitude in a positive way.
Where there is no love, there is no God. When we chose arguing, revenge and anger we are refusing God to be able to work in the situation. If you do not know love, you do not truly know God, because God is love.
When we let God's love overwhelm us in stressful and frustrating moments, He can change our outlook for good, giving us the patience and clarity to understand what God is doing, for He does all for good and even more importantly, He loves you.