It seems like the only way to do Christianity successfully is 100%. All of us for all of Him. What that means practically is that He promises that if I focus exclusively on the firm, he will look after my family. No dual focus. no juggling of priorities. I just state what lifestyle my family needs to have, focus all my time, energies and talents on the firm, and He takes care of my family's needs. That's a big mouthful to swallow, right there.
When we get our head around that, however, we've got our head around how Christianity works.
Christianity is the operation of God's grace through faith. All the things that God provides is made available to us by faith, by acts of commitment by which we express our faith. Once we have made the faith commitment, we experience the relevant feature of his grace without striving, and with surprising ease.