So when we're having a relationship with God, we might want to look at in which ways we're really treating God based on how God is, versus some idea of a 'changeable God'.
If God were changeable, you might be justified in, for example, asking Him to do something ... ie he hasn't done it already. Or, praying for something to be done which isn't his will. Or, believing that he doesn't have a desire to heal certain person due to sins. etc... various beliefs that arise out of the idea of a conditional, fickle God.
God has already accomplished everything because God already created. His creation is whole and complete already. He has already put into place everything that you really need, your ideal environment, the perfect conditions for your health, etc. He has also already established His laws and set up the 'mechanisms' by which you should live in alignment to His will.
So it's not so much a matter of, let's get God to bend to our conditions and do what we think hasn't been done yet. It's more like, let's accept what God has put in place and get into the role that He has chosen for us and act based on the laws he has already established and live in the way that He has already designed for us.
It's not that God is failing to give us a perfect life. But that's exactly what you're saying when you think that your life is a mess and isn't working out properly and needs correction. It's not because God has failed. God never fails. It's because we have resisted God's way, have resisted God's will, and want to have things be different. And it's also not that God isn't providing or giving or sharing, it's that we're not receiving. We're ignoring God and shutting out His help, it's not that He isn't helpful.
So it's like, we have this natural role, a 'function', which God has set in place, to be the Holy Son of God, and to be free of all illusions and all ego, and to live forever, carrying out His will and extending His kingdom. And if we're not doing that, it's because we have chosen not to, and therefore what can we expect but to meet with problems? The fact is, our ego self wants to have its own separate existence with its own rules and laws and power and do all this without God and expect it to go well. Life doesn't work smoothly without God.
So it's really a matter, what it comes down to, in the undoing of the authority problem (trying to have authority over God rather than accept and extend His authority), whether you are willing to BE what God has intended you to be, or whether you still want to be something else. Whether you want to be governed by laws of sickness and chaos and death, which you made, or whether you want to be under no laws but God's - the laws of eternal life.