Only by faith. And we see that faith is not what modern faith teachers teach. Neither is it simply believing that it will all pan out in the end. There is a need for Faith. But faith is ultimately about obedience.
Faith is about involvement.
We must take our guidance from God. He will reveal His will. And we must simply do what He wants us to do. He will try to show us that He can do more. Ephesians 3 verse 20 tells us that He can do far more than we ask or imagine.