Reality can only be understood perfectly by looking at it from both vertical and horizontal perspectives.
It is a co-reality.
Here is a case in point.
Who hardened Pharaoh's heart?
Was it God or Pharaoh himself?
Even before the hardening of heart actually happened, Exodus 4:21
[t]he LORD said to Moses, "When you return to Egypt, see that you perform before Pharaoh all the wonders I have given you the power to do. But I will harden his heart so that he will not let the people go."
From a prophetic and vertical point of view, it clearly says here that God is going to harden Pharaoh's heart.
On the other hand, horizontally speaking, four chapters later on in Exodus 8:15, we read:
But when Pharaoh saw that there was relief, he hardened his heart and would not listen to Moses and Aaron, just as the LORD had said.
Now it says clearly that Pharaoh hardened his own heart while the hardening was actually happening. Note the sequence of events. First, God prophesied that He was going to harden Pharaoh's heart. Second, God hardened Pharaoh's heart. Third, Pharaoh hardened his own heart. Finally, God let us know: See, I told you so. Pharaoh's heart was hardened. God knew that Pharaoh would harden his heart.
If God is making decisions that are beyond our control, then why are we responsible for them?
It is not exactly true that God is making decisions that are beyond our control. We are making our decisions and are responsible. God, in His omniscience, knows that we would do it. In some cases, eg. Pharoah, God made him do it in the sense that God created him. Horizontally, everyone, including Pharoah is responsible. Vertically, God creates all things and knows all things. It is a co-reality.