The charge to live by faith is repeated enough times in the Bible that we can't ignore it. We owe it to ourselves to find out what it means and to educate ourselves about it.
Jesus came to preach about the kingdom and even declared that some in his time would not die until the kingdom is revealed. Many people did not understand what he meant and yet that is the key to living by faith.
Faith is the substance in what we hope for and evidence of what cannot be seen. So when you activate faith it is far beyond wishful thinking and it goes into the realm of reality. The second verse of Hebrew 11 gives us the hint by stating that things seen are made from what cannot be seen and the rest of That chapter goes on to state all the giants in the Bible and what they used their faith for.
Jesus came with the kingdom which was giving us the opportunity to become citizens of a kingdom where God is king and we are his adopted children with same access as Jesus. The feat accomplished on the cross promoted anyone who submits to Jesus the opportunity to become royalty.
Royalty is taken care of by the kingdom and they have no lack or want, just like ambassadors they don't have a salary. Their needs are taken care of as they represent their countries. This is true for anyone who has received Jesus as their lord and saviour.
We are living in days where all we know is changing and man's effort will not be enough. We need to train our faith muscles so we can receive Supernaturally where the physical fails. Trouble is coming simply because this system is not sustainable and will fail. This has been proven spiritually and academically.
So if you are reading this I congratulate you; you need to settle the fact that God loves you unconditionally, that he has provided for you, that things you need are in the invisible and can be brought into the physical by faith. You need to lift up your head into your source and tap from that continually. You need to submit all you do into God's hand and watch it prosper.
God's system is different from the worlds system. Find out God's system and follow it conscientiously and eat the fruits. The good news in all of these is that God is in control and has taken care of all angles. My advise to you is to press into his commands and to obey his commands so as to receive the fruits. God's promises are sure and authentic, I'm just pleading with you to do your part so that the cycle can be completed. Peace!