people and spiritual forces

 Why does God need to surround us with spiritual forces? It appears they are with us for all eternity, based on having a new "heaven" and earth. Why is there an eternal heaven, since God will be dwelling with humans on Earth? If it's the same idea, there will be influences we can't see, but they will be neutral or positive. 

People can encounter these forces from God, Satan, other people, the environment and other ways probably. 

For years, while working jobs, I would get up every morning with a dull hung over feeling. Once I quit working it stopped. The other day I had it for the first time in many years. Spiritual forces working on my brain.