Theological determinism is as fatal to human reason and faith as Natural determinism, if all future events are totally determined by past states of affairs (see Plantinga: “...Where the Problem Really Lies”)
There is a parallel distinction between cause-effect and ground-consequent (Re: C. S. Lewis). The former applies to determinism and the latter to reasons, i.e., ‘teleological causes’. God did not actually ‘cause’ the world for cause-effect/time-space are properties of material existents, things that begin to exist. Here God’s will is the originating mechanism in bringing a cause-effect world into existence, with nomic regularity, in which life could flourish and in which man could reason as to his future choices.
We have the capacity to change our past patterns of responses to similar conditions based upon reflection and rational analysis of what we come to believe and value regarding self-efficacy toward personal purposes and goals - that was the way you were and behaved, how could you make this better, now, to become the person you believe want need to become?
Most of our existence is under the constraints of natural, deterministic laws but whatever constitutes the mental/spiritual component of that same existence has the capacity to do other than we did. There is choice and ‘significant’ free-will properly fit to human beings in their moral awareness. There is also God Whose sovereignty cannot diminished or denied and whose ultimate will is the necessary boundary to any other modicum of real freedom. We have, in the imago dei, a degree of designated sovereignty, for without this there is no knowledge, no moral recognition, and no genuine love.
Predestination speaks to purpose and divine intent using human freedom as the instrumental and efficient cause of human responsibility.
Like a child driving a rickety ole car in a Disney ride, he may go slow or fast, he may stop for awhile and restart, he may be bumped by other drivers from behind and bump those drivers in front of him, he may veer wildly to the left and right, laughing as he goes. But the ride will proceed, it will move in process, it will go from origin to destination, with the voyage colorized by the driver’s actions - but there is no doubt that where it started, where it was heading, and where it ended were absolutely determined from the beginning with unswerving certainty but that we lived freely along the straight or circuitous pathways we created.
(NET Bible - Proverbs 16:9)
“A person plans his course, but the Lord directs his steps”