We discover in the first few verses of the Bible that there is God, Angels and then Humans.
Nothing has changed. The dynamic established at creation and then from The Fall is a war like scenario in which we are key participants. The spiritual realm and our physical realm overlap in a huge way. We moderns have made the mistake of discounting the spiritual realm to our detriment. It is folly. There are still cultures in the world today that recognize this overlap. The chaos in our world today reflects this conflict. Our thoughts, actions and works in conjunction with God's providential hand in history determine may things.
As life now seems daunting do not despair but be vigilant and daily read the bible and pray for God's guidance and strength.